ch8 test review 2

CH8 REV

1. Balance and classify: C₆H₁₄ + O₂ = CO₂ + H₂O

2. First use ___ numbers to get the correct __ in the chemical formula

3. Once the chemical formula is correct, adjust the __ to balance the equation

4. List the 7 diatomic elements. What does diatomic mean?

5. According to __ the mass of the reactants always__ the mass of the products.

6. __ are placed above the arrow in an equation. They __ a reaction, but are not used up.

7. Classify: A + B = AB / CD + AB = AD + CB / AB = A + B / A + CD = AD + C

8. What is the name of solid that falls out of a solution in a rxn? What class of rxn?

9. Breaking apart by electrical current is called what? What class of rxn? Electrolysis of Water

10. What do you get when you decompose a binary compound?

11. If a gas is produced in a chemical rxn, what will you see?

12. Metals plus HCl produce metal compounds and what?

13. How are Br and I alike?

14. Balance and classify: N₂ + H₂ =NH₃

15. Write balanced chemical equations if there is a rxn; if no rxn write the reactant formulas and ‘nr’

a. calcium plus oxygen b. sodium chloride plus florine c. sodium and water d. potassium floride and chlorine e. aluminum and strontium nitrate f. copper and water g. iron III and sulfuric acid h . platinum and oxygen i. bismuth and hydrochloric acid k. zinc and Nickel II oxide

16 Write a balanced chemical equation for the synthesis of magnesium oxide include states.

17 Will a reaction happen when barium nitrate and sodium sulfate solutions are mixed? why or why not? write chemical equations with states if reaction happens.

18. Write balanced chemical equation for the combustion of C₁₁H₂₄

19. give examples or define: endothermic, exothermic, activation energy, limiting reactant

20. describe hfuel cell kit, especially 2 chemical reactions taking place