STAAR Review Category 1 The student will demonstrate an understanding of the properties of matter and energy and their interactions.

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1 Name STAAR Review Category 1 The student will demonstrate an understanding of the properties of matter and energy and their interactions. Conductivity Density Luster Malleability Metals Metalloids Non-metals Valence Key Terms Matching Materials flexibility without breaking Measure of a material s mass per unit volume Describes how a material reflects light Number of electrons in the outermost shell of an atom that determines the reactivity of an element have properties of both metals & nonmetals poor conductors of heat / electricity good conductors of heat / electricity ability to transfer heat and/or electricity 8.5A; 6.6A Metals - Lustrous, Malleable, and Good Conductors? These are of metals means shiny or reflective of light. Coins and jewelry are shiny and reflective. _ means capable of being shaped. * Aluminum foil is shaped or molded around food items to keep them fresh. Being a means being able to allow electricity and heat to flow through. When you think about the wires we use for electrical devices, they are mostly made of copper and other metals. Chemical Reactions Watch the Evidence of Chemical Reactions video on STAAR review site Observe the evidences that indicate new substances are formed. Use key words such as properties Summarize what you learned: Do you know? Physical When physical properties change Change is such as, or state of but new substance is formed. Examples: Chemical Change is Physical or Chemical Change Sharpen a pencil Dissolving C Rusting 6 H 12 O 6 in H 2 O Na reacts with H 2 0 Substance reacts Copper tarnishing with another Candle melting substance Candle wick burning New substances form Digesting food Substance changes state of matter PC = physical change ~ KEY ~ CC = chemical change 1

2 Name Density Density is a Formula for density is density = mass volume Metal Density g/cm 3 Aluminum 2.7 Brass 8.5 Copper 8.9 Gold 19.3 property A student is analyzing an unknown solid. The volume of the solid is 12cm3 and the mass is 213.6g. What metal does the student have? Show your work below Do you know? Element is _ Compound is Mixture is Common Elements He N _ C Ca _ Cl _ Si _ Common Compounds H 2 O CO 2 _ NaCl (salt) C 6 H 12 O 6 CO HCl (glucose) Do you know? Organic Compounds: Identify the following Chemical Formulas as organic or inorganic Glucose C 6 H 12 O 6 Water H 2 O Explain the main difference between an Element and Compound Calcium Chloride CaCl 2 Niacin CH 5 NO 2 Sucrose C 12 H 22 O 11 View Brain POP Movie Atoms Click Brain Pop User name:lockekk Password:brainpop Search Atoms Watch movie Play the quiz Graded quiz View Results My grade was a atom Atom Structure electron cloud nucleus Contains * charge * mass=0.005 AMU ( 0) Contains * charge * mass = 1 AMU Contains _ * charge (neutral) * mass = 1 AMU 8.5A 2

3 Name Label the parts of an Atom * negatively charged * mass = AMU * positively charged * mass = 1 AMU The Element Cube- Label the Parts # of p+ protons 29 Cu Copper 8.5A * charge (neutral) * mass = 1 AMU _ * + _ = Atomic mass average # of p+ & n 0 protons plus neutrons Use your Periodic Table to answer the questions below before moving forward! What is a row called? What is a column called? Identify the name of first 2 and last 2 families. _ What do all members in a family have in common with each other? What do all the members of the Noble Gas family have in common with each other. Use zigzag to identify the metals from the non metals Watch Brainpop video clip The Periodic Table Open Brain Pop--User name:lockekk Password:brainpop Search Periodic Table of Elements Watch movie and Record 3 facts 1) 2) 3) Play the quiz Graded quiz View Results My grade was Periodic Table Vocabulary Atomic number the number of _ in the of the atom every element has a atomic number Atomic Mass _ added together Proton ( ) charged subatomic particle found of the atom Neutron subatomic particle found in the of the atom has electric charge Periodic Table Vocabulary Electron subatomic particle; found in the electron cloud orbiting the nucleus has a charge Valence Electrons _ found in the _ most electron cloud of the atom Octet electrons in the _ most / shell 3

4 Name Neutral vs. Stable Neutral Atom- atom with the number of positive protons as negative electrons Stable Atom atom with a valence shell Typically atoms have an octet in the valence shell valence electrons makes a stable atom This occurs by atoms that, or electrons Periodic Table Practice Find the number of protons Lithium(Li) Chlorine(Cl) Oxygen(O) Find the number of electrons for a neutral atom Sodium(Na) Iron(Fe) Find the number of neutrons Hydrogen(H) Fluorine(F) Periodic Table Practice Find the number of valence electrons Lithium(Li) Chlorine(Cl) Oxygen(O) Helium(He) Neon(Ne) Aluminum(Al) How do you find the number of valence electrons an element has? Find the number of electron clouds / Shells Sodium(Na) how? Iron(Fe) how? Hydrogen(H) Fluorine(F) how? how? Periodic Table Practice Determine if the atom will lose, gain or share electrons base on the number of valence electrons How many valence electrons does an atom need to become stable? Lithium(Li) Chlorine(Cl) Oxygen(O) Carbon(C) why? why? why? why? Periodic Table Practice Explain your answers to the following questions Evidence of Chemical Reactions Click Evidence of Chemical Reactions Video Clip on STAAR Review website List 5 facts from the video 1) 2) 3) 4) 5) 4

5 Name Question When a drain cleaner is added to a clogged sink, the drainpipe becomes warm to the touch. What evidence indicates a chemical reaction is occurring? Chemical equations are Do you know? (using chemical symbols & formulas). What a chemical reaction starts with is known as the (located on left side of arrow) Ex: 2Ag + H 2 S Ag 2 S + H2 yields. What a chemical reactions ends up forming is called the and is located on the side of the arrow of a chemical reaction. Watch Brainpop video clip Chemical Equations Open Brain PopUser name:lockekk Password:brainpop Search Chemical Equation àwatch movie à Record 3 facts from the movie 1) 2) Law of Conservation of Mass Mass cannot be or Mass of the must be the same as the Example: use ERP Number of the Element in Reactant and Product Na + Cl à NaCl 2H 2 + O 2 à H 2 O Element Reactant Product Na E R P 3) Play the quiz Graded quiz View Results View quiz à My grade Cl Balanced or Not Balanced? Balanced or Not Balanced? Chemical Reactions & Equations Hydrochloric Acid + Sodium Hydroxide à Sodium Chloride + Water HCl + NaOH à NaCl + H 2 O Law of Conservation of Mass Mass cannot be created or destroyed The mass of the reactants must be the same as the mass of the products Use ERP to find out if this equation balanced?. 5

6 Name Question When a drain cleaner is added to a clogged sink, the drainpipe becomes warm to the touch. What evidence indicates a chemical reaction is occurring? Answer the questions on the following slides Map your questions easy, medium, hard USE RUBIES AND ATD (Attention to detail) 2C 6 H 12 O 6 How many 3Ba(CH 3 COO) 2 According to the Periodic Table, which of the following models best represents an element of carbon (C)? Molecules Elements Atoms Molecules Elements Atoms _ 8.5D 6

7 Name Sodium, aluminum and chlorine are alike in that all 3 A) Are compounds B) Are non metals C) Have one valence electron D) Have three energy levels Which of these best models an atom of lithium? Reminders We balance equations because of the law of Conservation of Mass Be able to identify if an element is a metal, metalloid or nonmetal using the periodic table along with the properties of each Be able to determine the density of an unknown substance Know that the atom is the smallest particle of a substance Also know the subatomic particles, charges and masses. 7

8 Name Assessment Quizzes lewisville.discoveryeducation.com Next take the following quizzes as instructed by your teacher using your STAAR Periodic Table and Formula Chart and ATD Properties of Matter My score was _ Matter and Energy My score was _ 8