Chemical Reactions (Part 2)

Test Description: Chemical Reactions (Part 2)

Instructions: Answer all questions to get your test result.

1) In a _________________ reaction, one element replaces another element in a compound.

2) Replacement reactions involve a rearrangement of metal and nonmetal elements in Ionic Compounds.

3) Replacement reactions involve a rearrangement of nonmetal elements in Covalent Compounds.

4) Replacement reactions NEVER involve metal elements.

5) Combustion reactions always include Carbon Dioxide and Water as reactants.

6) Combustion reactions always include Carbon Dioxide and Water as products.

7) Combustion reactions always include diatomic oxygen molecules as reactants.

8) Combustion reactions always include diatomic oxygen molecules as products.

9) A combustion reaction usually releases energy as _________________________ energy.

10) I will be expected to identify what type of chemical reaction is occurring by looking at a chemical equation on this summative assessment.

11) Chemical bonds contain a form of energy called ________________ energy.

12) When a chemical bond breaks, __________________.

13) When a chemical bond forms, __________________.

14) In physics and chemistry, the ______________________ states that the total energy of an isolated system remains constant; it is said to be conserved over time.

15) Chemical Reactions that ABSORB thermal energy are called ____________________.

16) Chemical Reactions that RELEASE thermal energy are called ____________________.

17) ________________________ is the minimum amount of energy needed to start a chemical reaction.

18) Which of the following could increase the rate of reaction in a chemical reaction?

19) A(n) _________________ is a substance that increases a reaction rate by lowering the activation energy necessary for a reaction to occur. Enzymes serve this function in the chemical reactions that take place in our digestive system.

20) A(n) ___________________ is a substance that slows, or even stops, a chemical reaction.


*select an answer for all questions

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