Quiz Act # s Study Guide

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1 Name: Activity #15-Families of Elements 1.) Define an element Quiz Act # s Study Guide 2.) Whether something is in the solid, liquid, or gas form is known as its state of matter. Is an elements state of matter a physical or chemical property? EXPLAIN 3.) Is the reactivity of an element a physical or chemical property? 4.) Using your activity #15 data, which family of elements contains highly reactive metals that form 2 bonds with hydrogen? 5.) What is a family as it relates to the periodic table of elements? 6.) In the periodic table, families are all located in the same Row or Column (circle one) 7.) What are the names of the four families of elements you learned about in this activity? 8.) The element Xenon (Xe) is below Krypton (Kr) in column 18 on the periodic table of elements. Design an element card below that shows the properties you predict for Xenon. Hint: Use periodic table & your act #15 data Xenon (metal or nonmetal) (solid, liquid, or gas) (color?) Atomic Mass: Reactivity (low, moderate, very high) # of bonds to hydrogen 9.) Circle the following statement that correctly represents the relationship between atoms and elements. a.) Elements are made of 1 or more identical atoms b.) Atoms are made of 1 or more identical elements 10.) What does the atomic mass of an element represent? 11.) What does the atomic number of an element represent?

2 Activity #16-Elements and the Periodic Table 1.) An element is a pure substance that contains many? a.) atoms of the same type b.) atoms of a different type 2.)The reactivity of an element describes how likely it is to react or other elements a.) look at b.) combine with c.) snarl at 3.) If an element is reactive, it is likely to a.) explode violently c.) combine with other elements b.) rust if exposed to air d.) move away when near another element 4.) Which scientists ideas led to the creation of the modern periodic table? a.) Mr. Strelick s cat Milo c.) Dmitri Mendeleev b.) Albert Einstein 5.) true/false- everything around you is made of elements 6.) In addition to the name and chemical symbol, what two things does the periodic table tell us about each element? 7.) How could you find the number of neutrons in an element using the periodic table? 8.) What side of the periodic table (right or left) are the metals located? 9.) What side of the periodic table (right or left) are the non-metals located? 10.) Sodium (Na) is a metal or non-metal? 11.) Krypton (Kr) is a metal or non-metal? 12.) Magnesium (Mg) is a metal or non-metal? 13.) What is Fluorine s chemical symbol? 14.) What is Fluorine s atomic mass? 15.) What is Fluorine s atomic number? 16.) How many protons are in fluorine? 17.) How many protons and neutrons are in fluorine? 18.) How many neutrons are in fluorine? 19.) Which of the three atomic particles (Proton, Neutron, & Electron) are found in the nucleus of an atom? 20.) Is salt water an element, compound, or mixture? Explain 21.) Is H 2 0 an element, compound, or mixture? Explain

3 Activity #17 Modeling Molecules 1.) Know how many binding sites are on each of the 4 types of atoms we used in class. Carbon- Hydrogen- Oxygen- Nitrogen- 2.) What is the difference between an atom and a molecule? 3.) How many molecules are shown above? What is the chemical formula of the above molecule? How many atoms are in above molecule? How many types of atoms are in above molecule? What is holding the atoms together in the above atom? 4.) Which model provides more information- a chemical formula or a sketch of the molecule? 5.) Draw a molecule with the chemical formula H 2 O 2 Activity #18-Properties of Plastics 1.) The different plastics used in activity #18 had different. (circle all that apply) a.) atoms b.) molecular structure c.) chemical formulas d.) physical properties e.) chemical properties f.) uses 2.) Why do different plastics have different properties?

4 3.) Draw a molecule of polyvinyl Chloride (PVC). Remember to use correct number of bonds to each atom. Polyvinyl NOT monovinyl chloride. (draw at least two monomoers and add H to close any open binding sites) Activity #19-Creating New Materials 1.) What were the two reactants in this activity? 2.) How did the properties of the final product compare to the reactants? 3.) What did the Sodium Borate do to the Polyvinyl Alcohol (PVA)? 4.) What was the difference between a polymer and a monomer? 5.) True/False and EXPLAIN In activity #19, we added sodium borate to PVA to create a polymer? 6.) A chemical reaction occurs when? (hint: LabLog) 7.) What is the scientific name for the goop Activity #20-Modeling Polymers 1.) What 2 cross linked polymers have you worked with so far? (one from #19 & one from #20) Example from #19 Example from #20 2.) What did the chain of silver paper clips represent? 3.) What did a single silver paper clip represent?

5 4.) What do the colored paper clips connect? 5.) What did the colored paper clips represent? 6.) What substance from act#19 did the chain of silver clips represent? 7.) What substance from act#19 did the colored paper clips represent? 8.) What substance from act #19 did the cross linked polymer (glob of paper clips) represent? 9.) What did Activity #19 (the goop lab) and Activity #20 (paper clips) have in common. (circle all that apply) a.) both used the same reactants d.) both made cross linked polymers b.) both altered (modified) a polymer e.) both modeled how a polymer is made c.) both used polyvinyl alcohol f.) both used or modeled a chemical reaction Activity #21-Polymer Parts 1.) Poly means Mono means 2.) What are cross links? What do they do? 3.) If poly catchasemiceylene is a polymer, what would the monomer be? a.) catschasemiceylene c.) catschasemice b.) miceylene d.) chasemice 4.) Polypropylene and Polystyrene are two different plastics, why do they have different physical and chemical properties? 5.) Adding more crosslinks to a polymer would make it a.) more rubbery b.) less rubbery 6.) Adding more crosslinks to a polymer would make it a.) more goopy b.) less goopy 7.) If you wanted to make the goop from activity #19 more rubbery, or less flexible. What should you add to it? a.) PVA c.) colored paperclips b.) Sodium Borate d.) ethanol 8.)Sulfur is similar to sodium borate in that it creates cross links in rubber. Which has more sulfur a rubber band or a tire. EXPLAIN 9.) TRUE/FALSE and EXPLAIN: All molecules are made of the same atoms? 10.) TRUE/FALSE and EXPLAIN: All polymers contain the same molecules within them

6 11.) TRUE/FALSE and EXPLAIN: All cross linked polymers contain the same molecules within them. 12.) Explain the three ways that a polymer can be altered and provide a picture for each 13.) What does the process of polymerization do? 14.) With the above molecule, What is the chemical formula? How many atoms total make up this molecule How many types of atoms make up this molecule Is the above molecule a compound or a mixture? Explain Atoms 1.) Protons are charged 2.) Electrons are charged 3.) Neutrons are charged. 4.) If an atom has no charge, and it has 12 protons, how many electrons does it have? a.) 12 b.) 11 c.) 13 d.) can not be determined based on this info 5.) If an atom has no charge, and it has 12 protons, how many neutrons does it have? a.) 12 b.) 11 c.) 13 d.) can not be determined based on this info 6.) If an atom is negatively charged, it will have more than

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