Snc2p Chemistry Unit Review

SNC2P CHEMISTRY UNIT REVIEW Name: ______

Doing the following review will prepare you well for the chemistry unit test, but you should also review your notes and work that has been done in class. Remember: You will only be allowed to do a re-write if you hand-in a completed review package.

Notes should be used for this review and text page numbers are given if assistance finding answers are required.

Part A. Safety 1. When is it safe to remove your safety glasses? ______2. Identify the meaning of the following WHMIS symbols: (see inside front cover of text)

A ______E ______B ______F ______C ______G______D______H______

3. Choose four of the symbols from #2 and state a safe practice for dealing with a product with that symbol. ______

4. If you are dealing with an industrial chemical that is highly corrosive and poisonous: (circle appropriate answers) a. what type of container would you put it in? glass plastic metal doesn’t matter b. where would you store it? With similar chemicals with all chemicals doesn’t’ matter c. type of storage area? Well-ventilated no-ventilation doesn’t matter d. storage height? High shelf eye-level lower shelf doesn’t matter

5. How should the teacher deal with small chemical spills in a classroom? (circle all that apply) Evacuate class Call office Neutralize acid with water Clean area of spill Pull fire alarm Neutralize acid with a base (like baking soda) Part B. Acids & Bases 6. Label the following parts on the pH scale below and write two household products in each zone. (pg 194) Scale 0-14 acid, base, neutral zones

7. Fill in the following table about acids & bases. (pg 190) Acid Base Taste

Ion involved

Colour change on litmus paper

Colour change in phenolphthalein

Part C. General Chemistry & Chemical Reactions 8. Give an example of each of the following: Chemical property (pg 168): ______Physical property (pg 168): ______Pure substance (pg 162): ______Element (pg 163): ______Compound (pg 163): ______Mixture (pg 163): ______

9. Define each of the following: Reactants (pg 214): ______Products (pg 214): ______Word equation (pg 214): ______Chemical equation (pg 214): ______

10. Why do we balance chemical equations? (pg 218) ______

11.Match the reaction type with the reactants. (pg 222) a. decomposition ______2 compounds b. synthesis ______2 elements c. single displacement ______1 compound/ 1 element d. double displacement ______1 compound

12. For a combustion reaction: (pg 246) a. what are the reactants: ______and ______b. what are the products: ______and ______

13. Count the number of atoms in each compound listed below.

a. NaC2H3O2 b. Al2(CO3)3 c. 3 Li2SO4 Na: ______Al: ______Li: ______C: ______C: ______S: ______H: ______O: ______O: ______O: ______

14. Balance the following chemical equations. a. ______Fe + ______O2  ______Fe2O3

b. ______Zn + ______Pb(NO3)4  ______Zn(NO3)2 + ______Pb

c. ______CaCl2 + ______AgNO3  ______Ca(NO3)2 + ______AgCl

Part D. Bonding & Naming Compounds 15. What type(s) of materials join together to form an ionic bond (pg 178): ______16. What type (s) of materials join together to form a molecular bond (pg 184): ______17. Identify the following as metals (M) or non-metals (NM): (see periodic table in back of text) Lithium ______oxygen ______nitrogen ______copper ______calcium ______18. Naming rule: When writing the name for an ionic compound, the metal ion is always written first with it’s original name. The non-metal ion is then written with an “-ide” last name. example: magnesium oxide Write the ion name for each of the substances in question 17. Lithium ______oxygen ______nitrogen______copper ______calcium ______19. In the copper (I) nitrate, what does the (I) mean? ______20. Naming Rules: Before you name anything, you have to follow these steps: Are there more than 2 types of atoms in the compound? If yes  you have a polyatomic ion (use sheet) Eg. NaNO3 = sodium nitrate Al(OH)3 = aluminum hydroxide

Are both atoms non-metals? If yes  you have to use prefixes (use sheet for prefixes) Eg. CO2 = carbon dioxide P2O5 = diphosphorous pentoxide Does the metal ion have more than one charge? If yes  you must use roman numerals in the name Eg. CuCl2 = copper (II) chloride Ni2O3 = nickel (III) oxide

If no to all of above questions, then it’s just a regular ionic naming compound! Eg. NaCl = sodium chloride BaF2 = barium fluoride

Using the naming rules above, place an X in box that matches, then name. If no box matches, then just name the compound

More than 2 Both non- More than one Name atom types? metals? charge for metal ion? LiF

Ca3(PO4)2

21. Naming Rules: Whenever you are given the name of a substance, you must criss- cross the charges to get the chemical formula. Exception: for molecular compounds, use the prefixes to tell you how many of each atom there are in the formula.

Write the chemical formula for each of the following compounds. a. iron (III) oxide ______b. magnesium bromide ______c. calcium sulfate ______d. disulfur decafluoride ______e. potassium carbonate ______f. potassium carbide______g. gold (I) nitride ______h. aluminum chromate ______22. Write each of the following as balanced chemical equations.

Sodium carbonate + barium chloride  sodium chloride + barium carbonate

______+ ______ ______+ ______Aluminum phosphate + lithium fluoride  aluminum fluoride + lithium phosphate

______+ ______ ______+ ______

23. Write the combustion of ethane (C2H6) in words and as a balanced chemical equation.

Word: ______+ ______ ______+ ______

Balanced equation: ______+ ______ ______+ ______