Review. 8th grade science STAAR. Name Class. Underline your strong TEKS and circle your weak TEKS: 8.5A Atoms. 7.5C Energy Flow Through Ecosystems

Size: px
Start display at page:

Download "Review. 8th grade science STAAR. Name Class. Underline your strong TEKS and circle your weak TEKS: 8.5A Atoms. 7.5C Energy Flow Through Ecosystems"

Transcription

1 8th grade science STAAR Review Name Class Underline your strong TEKS and circle your weak TEKS: 8.5A Atoms 7.5C Energy Flow Through Ecosystems 8.5B Reactivity 8.5C Periodic Table 8.5D Chemical Formulas 8.5E Chemical Reactions 8.5F Balanced Equations 7.6A Organic Compounds 7.6B Physical/Chemical Changes in Digestion 6.5C Elements vs. Compounds 6.6A Metals, Nonmetals, and Metalloids 6.6B Density 2014 Science Teaching Junkie, Inc. 1

2 Reporting Category 1: Matter and Energy Atoms 8.5A Fill in the missing information to summarize what you know about atomic structure. Name of Subatomic Location within the Atom Electrical Charge Relative inside the nucleus 1 amu neutral electron Bohr Model Draw an atom that has five protons, six neutrons, and five electrons. Complete the color key to identify the three major subatomic particles, then answer the 2 questions that follow. COLOR KEY Protons Neutrons Electrons What is the mass of the atom in this model? What is the electrical charge of the atom in this model? What subatomic particle determines the identity of an element? The diagram below shows models of four different atoms. Use the models to answer the following questions: A B C D Which atom has the greatest mass? Which atom(s) have a neutral electrical charge? Which atom(s) have a positive electrical charge? Which atom(s) have a negative electrical charge? 2014 Science Teaching Junkie, Inc. 2

3 Reactivity 8.5B Fill in the table below to identify the number of valence electrons for each group/family on the periodic table. Group/Family Number No. of Valence Electrons Which atom below is the most reactive? Explain why. Which atom below is inert or nonreactive? Explain why. P: 11 N: 12 P: 18 N: 22 P: 15 N: 16 Atom A Atom B Atom C Of the elements N, O, Cl, Na, and S, which two would likely have similar chemical properties? Why? Periodic Table 8.5C & 6.6A The atomic number is equal to the number of. The atomic mass number is equal to the plus the. The horizontal (lefttoright) rows of elements on the periodic table are called, which indicate the number of (shells) in an atom of those elements. There are (#) of these rows on the periodic table. The vertical columns (upanddown) of the periodic table are called or. There are (#) of these columns on the periodic table. All of the elements in each column have similar properties because they each have the same number of Science Teaching Junkie, Inc. 3

4 Circle the correct description in each row below to identify the properties of metals, nonmetals, and metalloids. Metals Location on Periodic Table: left of zigzag line / along zigzag line / right of zigzag line Luster: shiny / dull / varies (some are shiny, some are dull) Conductivity: good conductors of heat and electricity/ poor conductors / varies Malleability: able to be hammered into thin sheets / brittle / varies Most reactive metal group on periodic table is found in: Group 1 / Group 17 / Group 18 NonMetals Location on Periodic Table: left of zigzag line / along zigzag line / right of zigzag line Luster: shiny / dull / varies (some are shiny, some are dull) Conductivity: good conductors of heat and electricity/ poor conductors / varies Malleability: able to be hammered into thin sheets / brittle / varies Most reactive nonmetal group on periodic table is found in: Group 1 / Group 17 / Group 18 Metalloids Location on Periodic Table: left of zigzag line / along zigzag line / right of zigzag line Luster: shiny / dull / varies (some are shiny, some are dull) Conductivity: good conductors of heat and electricity/ poor conductors / varies Malleability: able to be hammered into thin sheets / brittle / varies On the Periodic Table below: Shade the group of elements that are called the Noble Gases red. Shade all of the elements in Period 4 blue. Circle three elements that are classified as metals. Draw a triangle around three elements that are classified as metalloids. 2 He 3 Li Be 10 Ne 11 Na 12 Mg Cl 18 Ar 19 K 20 Ca 21 Sc 22 Ti Cr 25 Mn 26 Fe 27 Co 28 Ni 29 Cu 30 Zn 31 Ga 32 Ge 33 As 34 Se 35 Br 36 Kr 37 Rb 38 Sr Zr 41 Nb 42 Mo 43 Tc 44 Ru 45 Rh 46 Pd 47 Ag 48 Cd 49 In 50 Sn 51 Sb 52 Te Xe 55 Cs 56 Ba 57 La 72 Hf 73 Ta Re 76 Os Pt 79 Au 80 Hg 81 Tl 82 Pb 83 Bi 84 Po 85 At 86 Rn 87 Fr 88 Ra 89 Ac 104 Rf 105 Db 106 Sg 107 Bh 108 Hs 109 Mt Use a periodic table to identify the following elements. Identify the metal in period 3 that is more reactive than magnesium: Identify the noble gas with 2 valence electrons: Identify the element in group 17 with 5 energy levels or shells: Identify the element that has more valence electrons than fluorine and fewer energy levels than sodium: Identify the metalloid in period 3 with more protons than sodium and fewer valence electrons than chlorine: 2014 Science Teaching Junkie, Inc. 4

5 Chemical Formulas 8.5D & 6.5C A coefficient tells you how many there are. A subscript tells you how many there are. Fill in the missing information to complete the chart. Substance Check One Box Check One Box Fill out each of these boxes. Chemical Symbol Chemical Formula Element Compound Total # El t Total # t Total # lecul H 2 O Cu 4 CaCO 3 Zr Ca 3 (PO 4 ) 2 2CO How many atoms of each element are in each formula? H2O2; Hydrogen: ; Oxygen: H2SO4; Hydrogen: ; Sulfur: ; Oxygen: CO(NH2)2; Carbon: ; Oxygen: ; Nitrogen: ; Hydrogen: How many atoms of oxygen are present in two molecules of glucose (C6H12O6)? Chemical Reactions 8.5E List 4 signs that a chemical reaction has occurred State whether each of these changes is physical (P) or chemical (C). Chopping wood: Burning paper: Boiling water: Tarnishing metal: Spoiling milk: Candle wax melting: Baking a cake: Dissolving sugar in water: Cracking eggs: 2014 Science Teaching Junkie, Inc. 5

6 While conducting many different labs over the school year, a student recorded observations in her science journal. Circle all of the following observations that would be considered evidence of a chemical reaction taking place. a) When the 2 clear, colorless solutions were combined, the result was a blue liquid. b) Solution #1 evaporated quickly. c) Some of liquid #2 froze into ice crystals. d) Some of the powder dissolved in the first beaker. e) After the liquids combined, the temperature dropped by 3 C. f) The baking soda and hydrochloric acid combined, forming bubbles. g) The powder absorbed some of the acid. h) The two liquids combined, forming a solid substance that sank to the bottom of the test tube. Balanced Equations 8.5F Label the following parts of the chemical equation below: coefficient, subscript, products, reactants, yields, chemical formula. A. B. C. D. E. F. The Law of Conservation of Mass states that during a chemical reaction, mass/matter is not or. Because of this law, there must be exactly the same number and kind of on each side of a chemical equation. To check if an equation is balanced or not, simply count the number of atoms of each element on the reactant side of the equation and check to see if there are the same number of atoms of each element on the side of the equation. If so, it is balanced. Which of the following chemical equations is balanced? A. Al CuCl2 AlCl3 Cu B. 2Al 3CuCl2 2AlCl3 3Cu C. 3Al 2CuCl2 3AlCl3 2Cu D. 4Al 3CuCl2 4AlCl3 3Cu Which of the following chemical equations is balanced? A. K3PO4 2HCl 2KCl 2H3PO4 B. K3PO4 3HCl KCl H3PO4 C. K3PO4 HCl KCl H3PO4 D. K3PO4 3HCl 3KCl H3PO Science Teaching Junkie, Inc. 6

7 Energy Flow Through Ecosystems 7.5C Highlight one complete food chain on the food web. Which organisms on the food web have the most available energy? Which organisms on the food web have the least available energy? Give their names. Draw arrows on the energy pyramid to show the direction of energy flow from greatest to least. On the pyramid, color producers green, herbivores yellow, and carnivores red. Only about % of the energy from one level of the energy pyramid is used to support the level above it. Almost all of the energy that supports life on Earth comes from. A B C D The process that plants use to capture the radiant energy from the sun and turn it into chemical energy is called. Organic Compounds 7.6A An organic compound has one or more atoms as part of the molecules structure. Other elements found in the organic compounds of living organisms include: (H), (O), (N), (S), and (P). Check one. Substance Formula Organic Inorganic sugar C 6 H 12 O 6 methane water 2014 Science Teaching Junkie, Inc. 7

8 Physical/Chemical Changes in the Digestive System 7.6B Place check marks in the appropriate boxes below to indicate the type(s) of changes that occur during the digestive process in the organs shown. Note: it is possible to have a check mark in both columns. Structure Mouth Stomach Small Intestine Physical Change Chemical Change Density 6.6B The formula to calculate density is density = Use the pictures of the triple beam balance and graduated cylinder to find the density of the rock. (Show all work!) The mass of the rock when placed on the balance: SHOW WORK HERE: A sample of metal has a mass of 23.4 g and a volume of 3.0 ml. What is the sample s most likely identity? A. Aluminum (2.8 g/ml) B. Gold (19.3 g/ml) C. Iron (7.8 g/ml) D. Copper (8.9 g/ml) What is the density of a substance with a volume of 5.0 ml and a mass of 15.0 g? A g/ml B. 3.0 g/ml C g/ml D g/ml 2014 Science Teaching Junkie, Inc. 8

Review. 8th grade science STAAR. Name Class. Underline your strong TEKS and circle your weak TEKS: 8.5A Atoms. 7.5C Energy Flow Through Ecosystems

Review. 8th grade science STAAR. Name Class. Underline your strong TEKS and circle your weak TEKS: 8.5A Atoms. 7.5C Energy Flow Through Ecosystems 8th grade science STAAR Review Name Class Underline your strong TEKS and circle your weak TEKS: 8.5A Atoms 7.5C Energy Flow Through Ecosystems 8.5B Reactivity 8.5C Periodic Table 8.5D Chemical Formulas

More information

Reporting Category 1: Matter and Energy

Reporting Category 1: Matter and Energy Name: Science Teacher: Reporting Category 1: Matter and Energy Atoms 8.5A Fill in the missing information to summarize what you know about atomic structure. Name of Subatomic Particle Location within the

More information

Reporting Category 1: Matter and Energy

Reporting Category 1: Matter and Energy Name: Science Teacher: Reporting Category 1: Matter and Energy Atoms Fill in the missing information to summarize what you know about atomic structure. Name of Subatomic Particle Location within the Atom

More information

1 Arranging the Elements

1 Arranging the Elements CHAPTER 12 1 Arranging the Elements SECTION The Periodic Table BEFORE YOU READ After you read this section, you should be able to answer these questions: How are elements arranged on the periodic table?

More information

Atomic terms. Example: Helium has an atomic number of 2. Every helium atom has two protons in its nucleus.

Atomic terms. Example: Helium has an atomic number of 2. Every helium atom has two protons in its nucleus. Atomic terms - ATOMIC NUMBER: The number of protons in the atomic nucleus. Each ELEMENT has the SAME NUMBER OF PROTONS in every nucleus. In neutral atoms, the number of ELECTRONS is also equal to the atomic

More information

Example: Helium has an atomic number of 2. Every helium atom has two protons in its nucleus.

Example: Helium has an atomic number of 2. Every helium atom has two protons in its nucleus. 59 Atomic terms - ATOMIC NUMBER: The number of protons in the atomic nucleus. Each ELEMENT has the SAME NUMBER OF PROTONS in every nucleus. In neutral atoms, the number of ELECTRONS is also equal to the

More information

Atomic structure. The subatomic particles. - a small, but relatively massive particle that carres an overall unit POSITIVE CHARGE

Atomic structure. The subatomic particles. - a small, but relatively massive particle that carres an overall unit POSITIVE CHARGE 35 Atomic structure - Until the early 20th century, chemists considered atoms to be indivisible particles. - The discovery of SUBATOMIC PARTICLES changed the way we view atoms! PROTON NEUTRON ELECTRON

More information

Periodic Table. - Mendeleev was able to predict the properties of previously unknown elements using his "periodic law" Modern periodic table

Periodic Table. - Mendeleev was able to predict the properties of previously unknown elements using his periodic law Modern periodic table 74 Periodic Table - Mendeleev (1869): --- When atoms are arranged in order of their atomic weight, some of their chemical and physical properties repeat at regular intervals (periods) --- Some of the physical

More information

CHEMICAL COMPOUNDS MOLECULAR COMPOUNDS

CHEMICAL COMPOUNDS MOLECULAR COMPOUNDS 48 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified

More information

Periodic Table. Modern periodic table

Periodic Table. Modern periodic table 41 Periodic Table - Mendeleev (1869): --- When atoms are arranged in order of their atomic weight, some of their chemical and physical properties repeat at regular intervals (periods) --- Some of the physical

More information

1 Electrons and Chemical Bonding

1 Electrons and Chemical Bonding CHAPTER 13 1 Electrons and Chemical Bonding SECTION Chemical Bonding BEFORE YOU READ After you read this section, you should be able to answer these questions: What is chemical bonding? What are valence

More information

NUCLEAR MODEL. Electron cloud. Electron cloud. Nucleus. Nucleus

NUCLEAR MODEL. Electron cloud. Electron cloud. Nucleus. Nucleus 37 NUCLEAR MODEL - Atoms are mostly empty space - NUCLEUS, at the center of the atom, contains protons and neutrons. This accounts for almost all the mass of an atom - Electrons are located in a diffuse

More information

4.1 Atomic structure and the periodic table. GCSE Chemistry

4.1 Atomic structure and the periodic table. GCSE Chemistry 4.1 Atomic structure and the periodic table GCSE Chemistry All substances are made of atoms this is cannot be chemically broken down it is the smallest part of an element. Elements are made of only one

More information

Periodic Table. Modern periodic table

Periodic Table. Modern periodic table 41 Periodic Table - Mendeleev (1869): --- When atoms are arranged in order of their atomic weight, some of their chemical and physical properties repeat at regular intervals (periods) --- Some of the physical

More information

Atoms and the Periodic Table

Atoms and the Periodic Table Atoms and the Periodic Table Parts of the Atom Proton Found in the nucleus Number of protons defines the element Charge +1, mass 1 Parts of the Atom Neutron Found in the nucleus Stabilizes the nucleus

More information

CHEMICAL COMPOUNDS MOLECULAR COMPOUNDS

CHEMICAL COMPOUNDS MOLECULAR COMPOUNDS 48 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified

More information

Putting it together... - In the early 20th century, there was a debate on the structure of the atom. Thin gold foil

Putting it together... - In the early 20th century, there was a debate on the structure of the atom. Thin gold foil 36 Putting it together... - In the early 20th century, there was a debate on the structure of the atom. RUTHERFORD EXPERIMENT Where do the particles go? Radioactive material A few bounce back A few particles

More information

- Dalton's theory sets LIMITS on what can be done with chemistry. For example:

- Dalton's theory sets LIMITS on what can be done with chemistry. For example: 34 - Dalton's theory sets LIMITS on what can be done with chemistry. For example: Chemistry can't convert lead (an element) into gold (another element). Sorry, alchemists! You can't have a compound form

More information

CHEMICAL COMPOUNDS MOLECULAR COMPOUNDS

CHEMICAL COMPOUNDS MOLECULAR COMPOUNDS 48 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified

More information

SCIENCE 1206 UNIT 2 CHEMISTRY. September 2017 November 2017

SCIENCE 1206 UNIT 2 CHEMISTRY. September 2017 November 2017 SCIENCE 1206 UNIT 2 CHEMISTRY September 2017 November 2017 UNIT OUTLINE 1. Review of Grade 9 Terms & the Periodic Table Bohr diagrams Evidence for chemical reactions Chemical Tests 2. Naming & writing

More information

CHEMICAL COMPOUNDS. - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds!

CHEMICAL COMPOUNDS. - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! 69 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified

More information

Middle School Science STAAR Review Reporting Category 1: Matter & Energy

Middle School Science STAAR Review Reporting Category 1: Matter & Energy 8.5.A describe the structure of atoms, including the masses, electrical charges, and locations, of protons and neutrons in the nucleus and electrons in the electron cloud Middle School Science STAAR Review

More information

The Periodic Table of the Elements

The Periodic Table of the Elements The Periodic Table of the Elements All matter is composed of elements. All of the elements are composed of atoms. An atom is the smallest part of an element which still retains the properties of that element.

More information

Placeholder zeros, even though they aren't SIGNIFICANT, still need to be included, so we know how big the number is!

Placeholder zeros, even though they aren't SIGNIFICANT, still need to be included, so we know how big the number is! 28 A few more math with significant figures examples: 15047 11 0.9876 Placeholder zeros, even though they aren't SIGNIFICANT, still need to be included, so we know how big the number is! Addition: 147.3

More information

Atomic weight: This is a decimal number, but for radioactive elements it is replaced with a number in parenthesis.

Atomic weight: This is a decimal number, but for radioactive elements it is replaced with a number in parenthesis. 47 Blocks on the periodic table 11 Sodium 22.99 Atomic number: This is always a whole number. The periodic table is arranged by atomic number! Element symbol: A one or two letter abbreviation for the name

More information

Atomic weight: This is a decimal number, but for radioactive elements it is replaced with a number in parenthesis.

Atomic weight: This is a decimal number, but for radioactive elements it is replaced with a number in parenthesis. 47 Blocks on the periodic table 11 Sodium 22.99 Atomic number: This is always a whole number. The periodic table is arranged by atomic number! Element symbol: A one or two letter abbreviation for the name

More information

CHEMICAL COMPOUNDS MOLECULAR COMPOUNDS

CHEMICAL COMPOUNDS MOLECULAR COMPOUNDS 48 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified

More information

The Periodic Table of Elements

The Periodic Table of Elements The Periodic Table of Elements 8 Uuo Uus Uuh (9) Uup (88) Uuq (89) Uut (8) Uub (8) Rg () 0 Ds (9) 09 Mt (8) 08 Hs (9) 0 h () 0 Sg () 0 Db () 0 Rf () 0 Lr () 88 Ra () 8 Fr () 8 Rn () 8 At (0) 8 Po (09)

More information

DO NOW: Retrieve your projects. We will be reviewing them again today. Textbook pg 23, answer questions 1-3. Use the section 1.2 to help you.

DO NOW: Retrieve your projects. We will be reviewing them again today. Textbook pg 23, answer questions 1-3. Use the section 1.2 to help you. DO NOW: Retrieve your projects. We will be reviewing them again today. Textbook pg, answer questions. Use the section. to help you. Chapter test is FRIDAY. The Periodic Table of Elements 8 Uuo Uus Uuh

More information

Made the FIRST periodic table

Made the FIRST periodic table Made the FIRST periodic table 1869 Mendeleev organized the periodic table based on the similar properties and relativities of certain elements Later, Henri Moseley organized the elements by increasing

More information

Advanced Chemistry. Mrs. Klingaman. Chapter 5: Name:

Advanced Chemistry. Mrs. Klingaman. Chapter 5: Name: Advanced Chemistry Mrs. Klingaman Chapter 5: The Periodic Law Name: _ Mods: Chapter 5: The Periodic Law Reading Guide 5.1 History of the Periodic Table (pgs. 125-129) 1) What did Dimitri Mendeleev notice

More information

Chapter 3: Elements and Compounds. 3.1 Elements

Chapter 3: Elements and Compounds. 3.1 Elements Chapter 3: Elements and Compounds 3.1 Elements An element is a fundamental substance that cannot be broken down by chemical or physical methods to simpler substances. The 118 known elements are nature

More information

6.3 Classifying Elements with the Periodic Table

6.3 Classifying Elements with the Periodic Table 6.3 Classifying Elements with the Periodic Table The Periodic Table was developed by scientists to organize elements in such a way as to make sense of the growing information about their properties. The

More information

Why all the repeating Why all the repeating Why all the repeating Why all the repeating

Why all the repeating Why all the repeating Why all the repeating Why all the repeating Why all the repeating Why all the repeating Why all the repeating Why all the repeating Patterns What Patterns have you observed in your life? Where to Get Help If you don t understand concepts in chapter

More information

9/20/2017. Elements are Pure Substances that cannot be broken down into simpler substances by chemical change (contain Only One Type of Atom)

9/20/2017. Elements are Pure Substances that cannot be broken down into simpler substances by chemical change (contain Only One Type of Atom) CAPTER 6: TE PERIODIC TABLE Elements are Pure Substances that cannot be broken down into simpler substances by chemical change (contain Only One Type of Atom) The Periodic Table (Mendeleev) In 1872, Dmitri

More information

Honors Chemistry - Unit 4 Bonding Part I

Honors Chemistry - Unit 4 Bonding Part I Honors Chemistry - Unit 4 Bonding Part I Unit 4 Packet - Page 1 of 8 Vocab Due: Quiz Date(s): Test Date: UT Quest Due: Bonding Vocabulary: see separate handout assignment OBJECTIVES: Chapters 4-8 Be able

More information

(FIRST) IONIZATION ENERGY

(FIRST) IONIZATION ENERGY 181 (FIRST) IONIZATION ENERGY - The amount of energy required to remove a single electron from the outer shell of an atom. - Relates to reactivity for metals. The easier it is to remove an electron, the

More information

Name: 8 th Grade Science STAAR. Review Booklet. My STAAR Goal: The Science Duo

Name: 8 th Grade Science STAAR. Review Booklet. My STAAR Goal: The Science Duo Name: 8 th Grade Science STAAR Review Booklet My STAAR Goal: Table of Contents: Matter and Energy Matter and Energy Vocabulary Page 3-5 Atomic Structure Page 6 Arrangement of the Periodic Table Page 7

More information

How many grams of sodium metal is required to completely react with 2545 grams of chlorine gas?

How many grams of sodium metal is required to completely react with 2545 grams of chlorine gas? 146 EXAMPLE PROBLEM: How many grams of sodium metal is required to completely react with 2545 grams of chlorine gas? 1 - Convert 2545 grams of chlorine gas to moles. Use formula weight. 2 - Convert moles

More information

Nucleus. Electron Cloud

Nucleus. Electron Cloud Atomic Structure I. Picture of an Atom Nucleus Electron Cloud II. Subatomic particles Particle Symbol Charge Relative Mass (amu) protons p + +1 1.0073 neutrons n 0 1.0087 electrons e - -1 0.00054858 Compare

More information

- Some properties of elements can be related to their positions on the periodic table.

- Some properties of elements can be related to their positions on the periodic table. 179 PERIODIC TRENDS - Some properties of elements can be related to their positions on the periodic table. ATOMIC RADIUS - The distance between the nucleus of the atoms and the outermost shell of the electron

More information

Chem Exam 1. September 26, Dr. Susan E. Bates. Name 9:00 OR 10:00

Chem Exam 1. September 26, Dr. Susan E. Bates. Name 9:00 OR 10:00 Chem 1711 Exam 1 September 26, 2013 Dr. Susan E. Bates Name 9:00 OR 10:00 N A = 6.022 x 10 23 mol 1 I A II A III B IV B V B VI B VII B VIII I B II B III A IV A V A VI A VII A inert gases 1 H 1.008 3 Li

More information

VIIIA He IIA IIIA IVA VA VIA VIIA. Li Be B C N O F Ne. Na Mg VIB VIIB VIIIB IB IIB S. K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br

VIIIA He IIA IIIA IVA VA VIA VIIA. Li Be B C N O F Ne. Na Mg VIB VIIB VIIIB IB IIB S. K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br 188 THE FIRST TWO PERIODIC TRENDS IN A NUTSHELL LARGER IONIZATION ENERGY SMALLER RADIUS IA H IIA IIIA IVA VA VIA VIIA VIIIA He Li Be B C N O F Ne Na Mg IIIB IVB VB Al Si P VIB VIIB VIIIB IB IIB S Cl Ar

More information

How many grams of sodium metal is required to completely react with 2545 grams of chlorine gas?

How many grams of sodium metal is required to completely react with 2545 grams of chlorine gas? EXAMPLE PROBLEM: How many grams of sodium metal is required to completely react with 2545 grams of chlorine gas? 1 - Convert 2545 grams of chlorine to moles chlorine using formula weight 2 - Convert moles

More information

Chapter 2 Atoms and the Periodic Table

Chapter 2 Atoms and the Periodic Table Chapter 2 1 Chapter 2 Atoms and the Periodic Table Solutions to In-Chapter Problems 2.1 Each element is identified by a one- or two-letter symbol. Use the periodic table to find the symbol for each element.

More information

- A CHEMICAL BOND is a strong attractive force between the atoms in a compound. attractive forces between oppositely charged ions

- A CHEMICAL BOND is a strong attractive force between the atoms in a compound. attractive forces between oppositely charged ions 191 CHEMICAL BONDS - A CHEMICAL BOND is a strong attractive force between the atoms in a compound. 3 TYPES OF CHEMICAL BOND Ionic bonds attractive forces between oppositely charged ions sodium chloride

More information

Periodic Table Workbook

Periodic Table Workbook Key Ideas: The placement or location of elements on the Periodic Table gives an indication of physical and chemical properties of that element. The elements on the Periodic Table are arranged in order

More information

- Some properties of elements can be related to their positions on the periodic table.

- Some properties of elements can be related to their positions on the periodic table. 180 PERIODIC TRENDS - Some properties of elements can be related to their positions on the periodic table. ATOMIC RADIUS - The distance between the nucleus of the atoms and the outermost shell of the electron

More information

Instructions. 1. Do not open the exam until you are told to start.

Instructions. 1. Do not open the exam until you are told to start. Name: Lab Day and Time: Instructions 1. Do not open the exam until you are told to start. 2. This exam is closed note and closed book. You are not allowed to use any outside material while taking this

More information

... but using electron configurations to describe how aluminum bromide forms is a bit cumbersome! Can we simplify the picture a bit?

... but using electron configurations to describe how aluminum bromide forms is a bit cumbersome! Can we simplify the picture a bit? 193... but using electron configurations to describe how aluminum bromide forms is a bit cumbersome! Can we simplify the picture a bit? LEWIS NOTATION / ELECTRON-DOT NOTATION - Lewis notation represents

More information

Using the Periodic Table

Using the Periodic Table MATH SKILLS TRANSPARENCY WORKSHEET Using the Periodic Table 6 Use with Chapter 6, Section 6.2 1. Identify the number of valence electrons in each of the following elements. a. Ne e. O b. K f. Cl c. B g.

More information

ORBITAL DIAGRAM - A graphical representation of the quantum number "map" of electrons around an atom.

ORBITAL DIAGRAM - A graphical representation of the quantum number map of electrons around an atom. 178 (MAGNETIC) SPIN QUANTUM NUMBER: "spin down" or "spin up" - An ORBITAL (region with fixed "n", "l" and "ml" values) can hold TWO electrons. ORBITAL DIAGRAM - A graphical representation of the quantum

More information

Chem 1711 Exam 1. Dr. Susan E. Bates. Name 9:00 OR 10:00

Chem 1711 Exam 1. Dr. Susan E. Bates. Name 9:00 OR 10:00 Chem 1711 Exam 1 September 25, 2014 Dr. Susan E. Bates ID#: 2014171 Name 9:00 OR 10:00 Please do not remove this page. The periodic table, constants, and equations you may need are on the last page of

More information

WRITING AN IONIC FORMULA

WRITING AN IONIC FORMULA WRITING AN IONIC FORMULA - if you know the ions that make up a compound, all you need to do is find the smallest ratio of cation to anion the compound needs to have an overall charge of zero Example: If

More information

Example: If a simple ionic compound is made of these two ions, what is its formula? In the final formula, don't write the charges on the ions!

Example: If a simple ionic compound is made of these two ions, what is its formula? In the final formula, don't write the charges on the ions! 88 WRITING AN IONIC FORMULA - if you know the ions that make up a compound, all you need to do is find the smallest ratio of cation to anion the compound needs to have an overall charge of zero Example:

More information

Lewis dot structures for molecules

Lewis dot structures for molecules 1 Lewis dot structures for molecules In the dot structure of a molecule, - SHARED valence electrons are shown with dashes - one per pair. - UNSHARED valence electrons ("lone pairs") are represented by

More information

Name Unit 4: Periodic Table Period. Unit 4 Vocabulary.Due Test Day

Name Unit 4: Periodic Table Period. Unit 4 Vocabulary.Due Test Day Name Unit 4: Periodic Table Period 1. History and Language of the Periodic Table 2. Identifying PROPERTIES OF METALS, METALLOIDS, & NONMETALS 3. Identifying GROUP PROPERTIES 4. Classifying elements 5.

More information

IONIC COMPOUNDS. - USUALLY form from metals combining with nonmetals, or from metals combining with metalloids

IONIC COMPOUNDS. - USUALLY form from metals combining with nonmetals, or from metals combining with metalloids 52 IONIC COMPOUNDS - USUALLY form from metals combining with nonmetals, or from metals combining with metalloids Examples: - almost always solid at room temperature, and usually have relatively high melting

More information

1 Arranging the Elements

1 Arranging the Elements CHAPTER 11 1 Arranging the Elements SECTION The Periodic Table BEFORE YOU READ After you read this section, you should be able to answer these questions: How are elements arranged on the periodic table?

More information

- Atomic line spectra are UNIQUE to each element. They're like atomic "fingerprints".

- Atomic line spectra are UNIQUE to each element. They're like atomic fingerprints. - Atomic line spectra are UNIQUE to each element. They're like atomic "fingerprints". - Problem was that the current model of the atom completely failed to explain why atoms emitted these lines. An orbit

More information

Essential Chemistry for Biology

Essential Chemistry for Biology 1 Chapter 2 Essential Chemistry for Biology Biology and Society: More Precious than Gold A drought is a period of abnormally dry weather that changes the environment and one of the most devastating disasters.

More information

VIIIA H PREDICTING CHARGE

VIIIA H PREDICTING CHARGE 58 IA PREDICTING CHARGE VIIIA H IIA IIIA IVA VA VIA VIIA You can reliably determine the charge using our method for Groups IA, IIA, IIIB, Aluminum, and the Group VA, VIA, and VIIA NONMETALS Li Be B C N

More information

CHM 101 PRACTICE TEST 1 Page 1 of 4

CHM 101 PRACTICE TEST 1 Page 1 of 4 CHM 101 PRACTICE TEST 1 Page 1 of 4 Please show calculations (stuffed equations) on all mathematical problems!! On the actual test, "naked answers, with no work shown, will receive no credit even if correct.

More information

If anything confuses you or is not clear, raise your hand and ask!

If anything confuses you or is not clear, raise your hand and ask! CHM 1045 Dr. Light s Section December 10, 2002 FINAL EXAM Name (please print) Recitation Section Meeting Time This exam consists of six pages. Make sure you have one of each. Print your name at the top

More information

Lab Day and Time: Instructions. 1. Do not open the exam until you are told to start.

Lab Day and Time: Instructions. 1. Do not open the exam until you are told to start. Name: Lab Day and Time: Instructions 1. Do not open the exam until you are told to start. 2. This exam is closed note and closed book. You are not allowed to use any outside material while taking this

More information

- A CHEMICAL BOND is a strong attractive force between the atoms in a compound. attractive forces between oppositely charged ions

- A CHEMICAL BOND is a strong attractive force between the atoms in a compound. attractive forces between oppositely charged ions CHEMICAL BONDS - A CHEMICAL BOND is a strong attractive force between the atoms in a compound. 3 TYPES OF CHEMICAL BOND Ionic bonds attractive forces between oppositely charged ions sodium chloride Covalent

More information

- Some properties of elements can be related to their positions on the periodic table.

- Some properties of elements can be related to their positions on the periodic table. 179 PERIODIC TRENDS - Some properties of elements can be related to their positions on the periodic table. ATOMIC RADIUS - The distance between the nucleus of the atoms and the outermost shell of the electron

More information

- Some properties of elements can be related to their positions on the periodic table.

- Some properties of elements can be related to their positions on the periodic table. 186 PERIODIC TRENDS - Some properties of elements can be related to their positions on the periodic table. ATOMIC RADIUS - The distance between the nucleus of the atoms and the outermost shell of the electron

More information

Topic 3: Periodicity OBJECTIVES FOR TODAY: Fall in love with the Periodic Table, Interpret trends in atomic radii, ionic radii, ionization energies &

Topic 3: Periodicity OBJECTIVES FOR TODAY: Fall in love with the Periodic Table, Interpret trends in atomic radii, ionic radii, ionization energies & Topic 3: Periodicity OBJECTIVES FOR TODAY: Fall in love with the Periodic Table, Interpret trends in atomic radii, ionic radii, ionization energies & electronegativity The Periodic Table What is the periodic

More information

What is the periodic table?

What is the periodic table? The periodic table of the elements represents one of the greatest discoveries in the history of science that certain elements, the basic chemical substances from which all matter is made, resemble each

More information

All chemical bonding is based on the following relationships of electrostatics: 2. Each period on the periodic table

All chemical bonding is based on the following relationships of electrostatics: 2. Each period on the periodic table UNIT VIII ATOMS AND THE PERIODIC TABLE 25 E. Chemical Bonding 1. An ELECTROSTATIC FORCE is All chemical bonding is based on the following relationships of electrostatics: The greater the distance between

More information

INSTRUCTIONS: CHEM Exam I. September 13, 1994 Lab Section

INSTRUCTIONS: CHEM Exam I. September 13, 1994 Lab Section CHEM 1314.05 Exam I John I. Gelder September 13, 1994 Name TA's Name Lab Section Please sign your name below to give permission to post, by the last 4 digits of your student I.D. number, your course scores

More information

ORBITAL DIAGRAM - A graphical representation of the quantum number "map" of electrons around an atom.

ORBITAL DIAGRAM - A graphical representation of the quantum number map of electrons around an atom. 160 ORBITAL DIAGRAM - A graphical representation of the quantum number "map" of electrons around an atom. 4p 3d 4s 3p 3s 2p 2s 1s Each blank represents an ORBITAL, and can hold two electrons. The 4s subshell

More information

A little history. When and How? Sir William Ramsey. ü 12/5/13. ü 1. Who put together the first useable Periodic Table?

A little history. When and How? Sir William Ramsey. ü 12/5/13. ü 1. Who put together the first useable Periodic Table? ü // A little history Johahann Dobereiner (80-89) o Triads John Newlands (8-898) o Law of Octaves Who put together the first useable ic Table? Mendeleev you remember him right? When and How? You know it

More information

WRITING AN IONIC FORMULA

WRITING AN IONIC FORMULA 55 WRITING AN IONIC FORMULA - if you know the ions that make up a compound, all you need to do is find the smallest ratio of cation to anion the compound needs to have an overall charge of zero Example:

More information

K. 27 Co. 28 Ni. 29 Cu Rb. 46 Pd. 45 Rh. 47 Ag Cs Ir. 78 Pt.

K. 27 Co. 28 Ni. 29 Cu Rb. 46 Pd. 45 Rh. 47 Ag Cs Ir. 78 Pt. 1 IA 1 H Hydrogen 1.01 Atomic number Element symbol Element name Atomic mass VIIIA 1 H 1.01 IIA IIIA IVA VA VIA VIIA 2 He 4.00 Metalloids 3 Li 6.94 4 Be 9.01 5 B 10.81 6 C 12.01 7 N 14.01 8 O 16.00 9 F

More information

Half Yearly Exam 2015

Half Yearly Exam 2015 GOZO COLLEGE Secondary School KULLEĠĠ TA GĦAWDEX Skola Sekondarja Half Yearly Exam 015 Year 9 Track 3 CHEMISTRY Time: 1½ hours Name: Class: Useful Data: Atomic numbers and relative atomic masses are given

More information

-"l" also contributes ENERGY. Higher values for "l" mean the electron has higher energy.

-l also contributes ENERGY. Higher values for l mean the electron has higher energy. 175 - Giving the four parameters will uniquely identify an electron around an atom. No two electrons in the same atom can share all four. These parameters are called QUANTUM NUMBERS. PRINCIPAL QUANTUM

More information

1. The arrangement of the elements from left to right in Period 4 on the Periodic Table is based on

1. The arrangement of the elements from left to right in Period 4 on the Periodic Table is based on 1. The arrangement of the elements from left to right in Period 4 on the Periodic Table is based on A) atomic mass B) atomic number C) the number of electron shells D) the number of oxidation states 2.

More information

Chem GENERAL CHEMISTRY I MIDTERM EXAMINATION

Chem GENERAL CHEMISTRY I MIDTERM EXAMINATION Concordia University CHEM 205 Fall 2009, B LAST NAME: FIRST NAME: STUDENT ID: Chem 205 - GENERAL CHEMISTRY I MIDTERM EXAMINATION PLEASE READ THIS BOX WHILE WAITING TO START INSTRUCTIONS: Calculators are

More information

8. Relax and do well.

8. Relax and do well. CHEM 1014 Exam I John I. Gelder September 16, 1999 Name TA's Name Lab Section Please sign your name below to give permission to post your course scores on homework, laboratories and exams. If you do not

More information

Full file at

Full file at 16 Chapter 2: Atoms and the Periodic Table Solutions to In-Chapter Problems 2.1 Each element is identified by a one- or two-letter symbol. Use the periodic table to find the symbol for each element. a.

More information

VIIIA H PREDICTING CHARGE

VIIIA H PREDICTING CHARGE 58 IA PREDICTING CHARGE VIIIA H IIA IIIA IVA VA VIA VIIA You can reliably determine the charge using our method for Groups IA, IIA, IIIB, Aluminum, and the Group VA, VIA, and VIIA NONMETALS Li Be B C N

More information

materials and their properties

materials and their properties materials and their properties macroscopic properties phase state strength / stiffness electrical conductivity chemical properties color / transparence spectroscopical properties surface properties density

More information

Atomic Structure & Interatomic Bonding

Atomic Structure & Interatomic Bonding Atomic Structure & Interatomic Bonding Chapter Outline Review of Atomic Structure Atomic Bonding Atomic Structure Atoms are the smallest structural units of all solids, liquids & gases. Atom: The smallest

More information

Chapter 12 The Atom & Periodic Table- part 2

Chapter 12 The Atom & Periodic Table- part 2 Chapter 12 The Atom & Periodic Table- part 2 Electrons found outside the nucleus; negatively charged Protons found in the nucleus; positive charge equal in magnitude to the electron s negative charge Neutrons

More information

Name: Class Period: Due Date: Unit 2 It s Elemental Test Review

Name: Class Period: Due Date: Unit 2 It s Elemental Test Review Name: Class Period: Due Date: TEKS covered: Unit 2 It s Elemental Test Review 8.5A describe the structure of atoms, including the masses, electrical charges, and locations of protons, electrons and nucleus

More information

-"l" also contributes ENERGY. Higher values for "l" mean the electron has higher energy.

-l also contributes ENERGY. Higher values for l mean the electron has higher energy. 170 - Giving the four parameters will uniquely identify an electron around an atom. No two electrons in the same atom can share all four. These parameters are called QUANTUM NUMBERS. PRINCIPAL QUANTUM

More information

WRITING AN IONIC FORMULA

WRITING AN IONIC FORMULA 55 WRITING AN IONIC FORMULA - if you know the ions that make up a compound, all you need to do is find the smallest ratio of cation to anion the compound needs to have an overall charge of zero Example:

More information

100% ionic compounds do not exist but predominantly ionic compounds are formed when metals combine with non-metals.

100% ionic compounds do not exist but predominantly ionic compounds are formed when metals combine with non-metals. 2.21 Ionic Bonding 100% ionic compounds do not exist but predominantly ionic compounds are formed when metals combine with non-metals. Forming ions Metal atoms lose electrons to form +ve ions. Non-metal

More information

CHEM 171 EXAMINATION 1. October 9, Dr. Kimberly M. Broekemeier. NAME: Key

CHEM 171 EXAMINATION 1. October 9, Dr. Kimberly M. Broekemeier. NAME: Key CHEM 171 EXAMINATION 1 October 9, 008 Dr. Kimberly M. Broekemeier NAME: Key I A II A III B IV B V B VI B VII B VIII I B II B III A IV A V A VI A VII A inert gase s 1 H 1.008 Li.941 11 Na.98 19 K 9.10 7

More information

Lab Day and Time: Instructions. 1. Do not open the exam until you are told to start.

Lab Day and Time: Instructions. 1. Do not open the exam until you are told to start. Name: Lab Day and Time: Instructions 1. Do not open the exam until you are told to start. 2. This exam is closed note and closed book. You are not allowed to use any outside material while taking this

More information

CHEM 107 (Spring-2004) Exam 2 (100 pts)

CHEM 107 (Spring-2004) Exam 2 (100 pts) CHEM 107 (Spring-2004) Exam 2 (100 pts) Name: ------------------------------------------------------------------------, SSN -------------------------------- LAST NAME, First (Circle the alphabet segment

More information

1. The elements on the Periodic Table are arranged in order of increasing A atomic mass C molar mass

1. The elements on the Periodic Table are arranged in order of increasing A atomic mass C molar mass 1. The elements on the Periodic Table are arranged in order of increasing A atomic mass C molar mass A Br, Ga, Hg C O, S, Se B atomic number D oxidation number 2. Which list includes elements with the

More information

1. Following Dalton s Atomic Theory, 2. In 1869 Russian chemist published a method. of organizing the elements. Mendeleev showed that

1. Following Dalton s Atomic Theory, 2. In 1869 Russian chemist published a method. of organizing the elements. Mendeleev showed that 20 CHEMISTRY 11 D. Organizing the Elements The Periodic Table 1. Following Dalton s Atomic Theory, By 1817, chemists had discovered 52 elements and by 1863 that number had risen to 62. 2. In 1869 Russian

More information

4.06 Periodic Table and Periodic Trends

4.06 Periodic Table and Periodic Trends 4.06 Periodic Table and Periodic Trends Dr. Fred Omega Garces Chemistry 100, Miramar College 1 4.06 Periodic Table and Periodic Trend The Periodic Table and the Elements What is the periodic table? What

More information

8. Relax and do well.

8. Relax and do well. CHEM 1314.03 Exam I John I. Gelder September 25, 1997 Name TA's Name Lab Section Please sign your name below to give permission to post, by the last 4 digits of your student I.D. number, your course scores

More information

EXAMPLES. He VIA VIIA Li Be B C N O F Ne

EXAMPLES. He VIA VIIA Li Be B C N O F Ne 59 IA EXAMPLES VIIIA H IIA IIIA IVA VA He VIA VIIA Li Be B C N O F Ne Na Mg IIIB IVB VB Al Si P VIB VIIB VIIIB IB IIB S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru

More information

Part 2. Multiple choice (use answer card). 90 pts. total. 3 pts. each.

Part 2. Multiple choice (use answer card). 90 pts. total. 3 pts. each. 1 Exam I CHEM 1303.001 Name (print legibly) Seat no. On my honor, I have neither given nor received unauthorized aid on this exam. Signed Date Part 1. Nomenclature. 10 pts. total. 2 pts. each. Fill in

More information

Radiometric Dating (tap anywhere)

Radiometric Dating (tap anywhere) Radiometric Dating (tap anywhere) Protons Neutrons Electrons Elements on the periodic table are STABLE Elements can have radioactive versions of itself called ISOTOPES!! Page 1 in your ESRT has your list!

More information