WRITING AN IONIC FORMULA

Size: px
Start display at page:

Transcription

1 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: In the final formula, don't write the charges on the ions! * Remember, ionic compounds are written with the SMALLEST wholenumber ratio! Ionic formulas are ALWAYS written with the cation first, and the anion second! Cross method:

2 56 More examples: You can also use the "cross method", as described in your textbook, to write formulas. Use caution, as the "cross method" will sometimes give you the wrong formula! It would give you the wrong answer for this one!

3 57 PREDICTING CHARGES - how do you figure out the charge that an element might take when it becomes an ion? - for many main group elements, you cah predict the charge using the periodic table! 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 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 Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Rf Db Sg Bh Hs Mt "inner" transition metals go here Elements in group VIIIA - the "noble gases" - do not form ions! Many OTHER main-group elements form either anions or cations that have the same overall number of electrons as the NEAREST (in terms of atomic number) noble gas!

4 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 O F Ne He 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 Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Rf Db Sg Bh Hs Mt "inner" transition metals go here Aluminum (Al): At atomic number 13, it is three electrons away from neon (Ne), and 5 electrons away from argon (Ar). Prediction: Aluminum will lose three electrons to form the cation Al Bromine (Br): At atomic number 35, bromine is one electron away from krypton (Kr). Prediction: Bromine will gain one electron to form the anion Br Strontium (Sr): At atomic number 38, strontium is two electrons away from krypton. Prediction: Strontium will lose two electrons to form the cation Sr

5 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 Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Rf Db Sg Bh Hs Mt "inner" transition metals go here Find the formulas of: (1) an ionic compound containing Al and Br (2) an ionic compound containing Mg and O (3) an ionic compound containing S and K

6 60 Find the formula of: * an ionic compound containing Al and Br Find the formula of: * an ionic compound containing Mg and O Find the formula of: * an ionic compound containing S and K Reminder: When writing a complete ionic formula, put the cation (+ charge) first! >

7 61 IA H TRANSITION METAL IONS VIIIA 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 Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Rf Db Sg Bh Hs Mt "inner" transition metals go here The transition metals always form CATIONS! However, many transition metals are capable of forming SEVERAL DIFFERENT CATIONS! Example: Iron (Fe) forms two cations, depending on the situation: Fe or Fe

8 62 TRANSITION METAL CATIONS - So how do you know which cation you're dealing with? For now, you'll have to be told - Either the chemical formula of an ionic compound or the name of an ionic compound can tell you what charge is on the transition metal cation. Examples: This compound contains iron ions with a charge of +3. They are called "iron(iii)" ions (pronounced "iron three"), and the compound is called "iron(iii) nitride" This compound contains iron ions with a charge of +2. They are called "iron(ii)" ions (pronounced "iron two"), and the compound is called "iron(ii) nitride"

9 63 POLYATOMIC IONS - Some MOLECULES can gain or lose electrons to form CATIONS or ANIONS. These are called POLYATOMIC IONS - Polyatomic ions form ionic compounds in the same way that single-element ions do. Example: CARBONATE ION * Use parenthesis when an ionic compound's formula contains more than one of a polyatomic ion. See the web site or page 63 - table 2.5 (9th ed) or table 2.6 (10th ed) - for a list of common polyatomic ions!

10 64 NAMES OF IONS - To properly discuss ions and ionic compounds, we have to know how to name them! CATIONS 3 kinds: Main group cations (metals that take only one charge when forming ions) - The element's name is the same as the ion's name! Mg : "magnesium ion" Transition metal cations (from metals that can form several cations) - The CHARGE of the cation must be given. Use a ROMAN NUMERAL after the element name to indicate charge! Polyatomic cations Fe Fe : "iron(ii) ion" : "Iron(III) ion" - Memorize list. NH : "ammonium ion"

11 65 ANIONS 2 kinds Main-group nonmetals - Use the STEM NAME of the element, then add "-ide" suffix N : "nitride" ion P : "phosphide ion" O : "oxide ion" F : "fluoride ion" Polyatomic ions - Memorize list.(see web site) C H O : "acetate ion" SO : "sulfate ion" NO : "nitrate ion" SO "sulfite ion" NO : "nitrite ion" * Polyatomic ions ending in "-ate" and "-ite" suffixes always contain oxygen! "-ate" ions have more oxygen atoms than their "-ite" counterparts.

12 66 NAMING IONIC COMPOUNDS - The name of the compound is based on the name of the ions in the compound - Cation first, anion second Examples: magnesium hydroxide iron(iii) oxide sodium sulfide copper(ii) oxide beryllium bromide copper(i) oxide * Remember to include the Roman numeral for CHARGE when you're writing transition metal compound names! Page 63 (9th edition): Chart of polyatomic ions Page 64 (10th edition)

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:

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:

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

-"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

- 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

(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

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

- 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

- 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

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

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

- 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

-"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

... 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

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

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

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

- 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

- 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

(please print) (1) (18) H IIA IIIA IVA VA VIA VIIA He (2) (13) (14) (15) (16) (17)

CHEM 10113, Quiz 3 September 28, 2011 Name (please print) All equations must be balanced and show phases for full credit. Significant figures count, show charges as appropriate, and please box your answers!

- 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

Solutions and Ions. Pure Substances

Class #4 Solutions and Ions CHEM 107 L.S. Brown Texas A&M University Pure Substances Pure substance: described completely by a single chemical formula Fixed composition 1 Mixtures Combination of 2 or more

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

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

- When atoms share electrons, the electrons might not be EVENLY shared. Shared electrons may spend more time around one atomic nucleus than the other.

228 POLARITY - When atoms share electrons, the electrons might not be EVENLY shared. Shared electrons may spend more time around one atomic nucleus than the other. - When electrons are shared UNEVENLY,

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.

CHEM 10113, Quiz 5 October 26, 2011

CHEM 10113, Quiz 5 October 26, 2011 Name (please print) All equations must be balanced and show phases for full credit. Significant figures count, show charges as appropriate, and please box your answers!

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

- 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

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

- Light has properties of WAVES such as DIFFRACTION (it bends around small obstructions).

170 LIGHT wavelength Diffraction frequency = wavelengths / time = - Light has properties of WAVES such as DIFFRACTION (it bends around small obstructions). - Einstein noted that viewing light as a particle

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

Experiment Three. Lab two: Parts 2B and 3. Halogens used in Parts 2 and 3. Lab one: Parts 1 and 2A. Halogens (Family VIIA) used in Parts 2 and 3

Experiment Three Lab one: Parts 1 and 2A Lab two: Parts 2B and 3 1 1A 1 H 1s 1 2 IIA 3 Li 2s 1 1 1 Na 3s 1 1 9 K 4s 1 3 7 Rb 5s 1 5 5 Cs 6s 1 8 7 Fr 7s 1 4 Be 2s 2 1 2 Mg 3s 2 3 IIIB 4 IVB 5 VB 6 VIB 7

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

7. Relax and do well.

CHEM 1215 Exam II John II. Gelder October 7, 1998 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 5 different pages. The last page includes a periodic table and a solubility

7. Relax and do well.

CHEM 1215 Exam II John II. Gelder October 7, 1998 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 5 different pages. The last page includes a periodic table and a solubility

Halogens HALOGENS. Parts 2A and 2B. Chem : Feb. 19, 20 and March 3. Compare the properties and reactivity of the halogens and halides

Chem. 125-126: Feb. 19, 20 and March 3 Experiment 3 Session 2 (Three hour lab) Complete Experiment 3 Parts 2B and 3 Complete team report Complete discussion presentation Parts 2A and 2B Compare the properties

HANDOUT SET GENERAL CHEMISTRY I

HANDOUT SET GENERAL CHEMISTRY I Periodic Table of the Elements 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 IA VIIIA 1 2 H He 1.00794 IIA IIIA IVA VA VIA VIIA 4.00262 3 Li 6.941 11 Na 22.9898

SHAPES OF EXPANDED VALENCE MOLECULES

228 SHAPES OF EXPANDED VALENCE MOLECULES There are five atoms bonded to the central phosphorus atom, and they will attempt to get as far apart as possible from one another! The top and bottom atoms are

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

7. Relax and do well.

CHEM 1014 Exam III John III. Gelder November 18, 1999 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 7 different pages. The last page includes a periodic table and

8. Relax and do well.

CHEM 1215 Exam III John III. Gelder November 11, 1998 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 7 different pages. The last page includes a periodic table and

Course theme. Three hours of lab Complete E1 (Parts 1, 2, 3, 4, and 5B) Prepare discussion presentation Prepare team report.

Experiment Session 2 Electrons and Solution Color Three hours of lab Complete E (Parts, 2, 3, 4, and 5B) Prepare discussion presentation Prepare team report. Course theme There are structure and property

Three hours of lab Complete E1 (Parts 1, 2, 3, 4, and 5B) Prepare discussion presentation Prepare team report. Course theme

Experiment 1 Session 2 Electrons and Solution Color Three hours of lab Complete E1 (Parts 1, 2, 3, 4, and 5B) Prepare discussion presentation Prepare team report. Course theme There are structure and property

- Why are phase labels required? Because phase changes either absorb or release energy. ... what does this mean?

157 SINCE the enthalpy change does NOT depend on path, this means that we can use standard values for enthalpy to predict the heat change in reactions that we have not tested in a calorimeter. THERMOCHEMICAL

Acids. Lewis Acids and Bases. Lewis Acids. Lewis acids: H + Cu 2+ Al 3+ E5 Lewis Acids and Bases (Session 1) March 19-24

E5 Lewis Acids and Bases (Session 1) March 19-24 Session one Pre-lab (p.151) due 1st hour discussion of E4 Lab (Parts 1and 2A) Session two Lab: Parts 2B, 3 and 4 Acids Bronsted: Acids are proton donors.

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

Bronsted: Acids are proton donors. Session one Pre-lab (p.151) due 1st hour discussion of E4 Lab (Parts 1and 2A)

E5 Lewis Acids and Bases (Session 1) November 5-11 Acids Bronsted: Acids are proton donors. Session one Pre-lab (p.151) due 1st hour discussion of E4 Lab (Parts 1and 2A) Problem Compounds containing cations

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

INSTRUCTIONS: Exam III. November 10, 1999 Lab Section

CHEM 1215 Exam III John III. Gelder November 10, 1999 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 7 different pages. The last page includes a periodic table and

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

1.02 Elements, Symbols and Periodic Table

.0 Elements, Symbols and Periodic Table Dr. Fred O. Garces Chemistry Miramar College.0 Elements, Symbols and the Periodic Table January 0 The Elements: Building block of Matter The periodic table of the

HANDOUT SET GENERAL CHEMISTRY II

HANDOUT SET GENERAL CHEMISTRY II Periodic Table of the Elements 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 IA VIIIA 1 2 H He 1.00794 IIA IIIA IVA VA VIA VIIA 4.00262 3 Li 6.941 11 Na 22.9898

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.

Three hour lab. Chem : Sept Experiment 2 Session 2. Preparation Pre-lab prep and reading for E2, Parts 3-5

Chem.25-26: Sept.24-3 Experiment 2 Session 2 Preparation Pre-lab prep and reading for E2, Parts 3-5 Experiment 2 Session 2 Electrons and Solution Color Three hour lab Complete E2 (Parts - 5) Prepare discussion

E5 Lewis Acids and Bases. Acids. Acids. Session one. Session two Lab: Parts 2B, 3 and 4

E5 Lewis Acids and Bases Session one Pre-lab (p.141) due at start of lab. First hour: Discussion of E4 Lab: Parts 1and 2A Session two Lab: Parts 2B, 3 and 4 Acids Bronsted: Acids are proton donors and

Partial Periodic Table of the Elements

Name (print clearly) Seat number Quiz 3 (100 points) Chemistry 1303.002 September 12, 2018 1. (15 points) One of the following reactions will occur, one will not. Determine which one occurs and then a.

- A polar molecule has an uneven distribution of electron density, making it have ends (poles) that are slightly charged.

14 POLARITY and shape: - A polar molecule has an uneven distribution of electron density, making it have ends (poles) that are slightly charged. POLARITY influences several easily observable properties.

7. Relax and do well.

CHEM 1215 Exam II John II. Gelder October 13, 1999 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 5 different pages. The last page includes a periodic table and a solubility

E5 Lewis Acids and Bases: lab 2. Session two lab Parts 2B, 3, and 4. Session one lab Parts 1and 2A. Aquo Complex Ions

E5 Lewis Acids and Bases: lab 2 Session one lab Parts 1and 2A Session two lab Parts 2B, 3, and 4 Part 2B. Complexation, Structure and Periodicity Compare the reactivity of aquo complex ions containing

Fall 2011 CHEM Test 4, Form A

Fall 2011 CHEM 1110.40413 Test 4, Form A Part I. Multiple Choice: Clearly circle the best answer. (60 pts) Name: 1. The common constituent in all acid solutions is A) H 2 SO 4 B) H 2 C) H + D) OH 2. Which

4.01 Elements, Symbols and Periodic Table

.0 Elements, Symbols and Periodic Table Dr. Fred O. Garces Chemistry 00 Miramar College.0 Elements, symbols and the Periodic Table Aug The Elements: Building block of Matter The periodic table of the chemical

E4 Acids, Bases, and Salts

E4 Acids, Bases, and Salts Session One of two session lab Complete Parts 1 and 2 in lab. If time allows, start or complete Part 3. Acids and Bases Q. Are acid-base properties of substances predictable

CHEM 10123/10125, Exam 2

CHEM 10123/10125, Exam 2 March 7, 2012 (50 minutes) Name (please print) Please box your answers, and remember that significant figures, phases (for chemical equations), and units do count! 1. (13 points)

8. Relax and do well.

CHEM 1225 Exam I John I. Gelder February 4, 1999 Name KEY 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

E5 Lewis Acids and Bases: lab 2. Session two lab Parts 2B, 3, and 4. Session one lab Parts 1and 2A. Aquo Complex Ions. Aquo Complex Ion Reactions

E5 Lewis Acids and Bases: lab 2 Session one lab Parts 1and 2A Part 2B. Complexation, Structure and Periodicity Compare the reactivity of aquo complex ions containing pre-transition, transition, and post-transition

8. Relax and do well.

CHEM 1314 3;30 pm Theory Exam III John III. Gelder November 13, 2002 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 8 different pages. The last page include a periodic

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

1 IA 1 ydrogen 1.01 Atomic number Element symbol Element name Atomic mass VIIIA 1 1.01 IIA IIIA IVA VA VIA VIIA 2 e 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 19.00

E4 Acids, Bases, and Salts

E4 Acids, Bases, and Salts Session One of two session lab Complete Parts 1 and 2 in lab. If time allows, start or complete Part 3. Reminder: Pre-lab report, page 112, due at start of lab. Acids and Bases

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

Circle the letters only. NO ANSWERS in the Columns! (3 points each)

Chemistry 1304.001 Name (please print) Exam 4 (100 points) April 12, 2017 On my honor, I have neither given nor received unauthorized aid on this exam. Signed Date Circle the letters only. NO ANSWERS in

8. Relax and do well.

CHEM 1225 Exam III John III. Gelder April 8, 1999 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 7 different pages. The last two pages includes a periodic table and

- Some MOLECULES can gain or lose electrons to form CATIONS or ANIONS. These are called POLYATOMIC IONS

63 POLYATOMIC IONS - Some MOLECULES can gain or lose electrons to form CATIONS or ANIONS. These are called POLYATOMIC IONS - Polyatomic ions form ionic compounds in the same way that single-element ions

Three hour lab. Chem : Feb Experiment 2 Session 2. Experiment 2 Session 2 Electrons and Solution Color

Chem.25-26: Feb. 5 - Experiment 2 Session 2 Preparation Pre-lab prep and reading for E2, Parts 3-5 Experiment 2 Session 2 Electrons and Solution Color Three hour lab Complete E2 (Parts - 5) Prepare discussion

Circle the letters only. NO ANSWERS in the Columns!

Chemistry 1304.001 Name (please print) Exam 5 (100 points) April 18, 2018 On my honor, I have neither given nor received unauthorized aid on this exam. Signed Date Circle the letters only. NO ANSWERS in

A DOT STRUCTURE FOR A LARGER MOLECULE ETHANOL! Count valence electrons

212 A DOT STRUCTURE FOR A LARGER MOLECULE Count valence electrons Pick central atom and draw skeletal structure - central atom is usually the one that needs to gain the most electrons! - skeletal structure

8. Relax and do well.

CHEM 1515 Exam II John II. Gelder October 14, 1993 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 8 different pages. The last two pages include a periodic table, a

CHEM Come to the PASS workshop with your mock exam complete. During the workshop you can work with other students to review your work.

It is most beneficial to you to write this mock midterm UNDER EXAM CONDITIONS. This means: Complete the midterm in 1.5 hours. Work on your own. Keep your notes and textbook closed. Attempt every question.

ph = - log [H3O+] Example: ph 7 = - log [ 1 x 10-7] [H3O+] = mole/liter units ph values are unitless

E4 Acids, Bases, and Salts Oct. 1517 and Oct. 2728* Session One of two session lab Complete Parts 1 and 2 in lab. Part 1. Structure and AcidBase Properties Q. Are properties of a compound predictable from

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

Atomic Emission Spectra. and. Flame Tests. Burlingame High School Chemistry

Atomic Structure Atomic Emission Spectra and Flame Tests Flame Tests Sodium potassium lithium When electrons are excited they bump up to a higher energy level. As they bounce back down they release energy

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