Question 1

Which shape is used to represent that heat is required for the reaction to take place?

Accepted Answer

triangle

Answer

circle

Answer

square

Answer

diamond

Question 2

Which type of reaction involves one reactant breaking down into more than one products?

Accepted Answer

decomposition

Answer

synthesis

Answer

combustion

Answer

double replacement

Question 3

On which side of the arrow are the products written?

Accepted Answer

right

Answer

above

Answer

left

Answer

bottom

Question 4

What must you do to make sure the number of atoms in the reactants are equal to the number of atoms in the products?

Accepted Answer

add numbers in front of the formulas

Answer

change subscripts to make the numbers equal

Answer

add numbers after the formulas

Answer

skip the problem because it makes no sense

Question 5

Which type of reaction is AB + C --> AC + B

Accepted Answer

single replacement

Answer

double replacement

Answer

synthesis

Answer

decomposition

Question 6

True or false: It is possible to have only one reactant.

Accepted Answer

True

Answer

False

Question 7

A (g) in the chemical equation represents:

Accepted Answer

gas

Answer

giga

Answer

gallium

Answer

grams

Question 8

The term aqueous means:

Accepted Answer

the substance is dissolved in water

Answer

the substance is water

Answer

the substance floats in water

Answer

the substance is a liquid at room temperature

Question 9

Which of the following is a diatomic element

Accepted Answer

nitrogen

Answer

carbon

Answer

sodium

Answer

mercury

Question 10

Which of the following best represents a synthesis reaction?

Accepted Answer

A + B --> AB

Answer

AB --> A +B

Answer

AB + CD --> AD + CB

Answer

AB + C --> CB + A

Question 11

Which of the following must be a reactant in a combustion reaction?

Accepted Answer

oxygen

Answer

water

Answer

chlorine

Answer

methane

Question 12

What is a + used for in a chemical equation?

Accepted Answer

to separate the reactants from one another or the products from one another

Answer

to show that heat is needed for the reaction to occur

Answer

to separate the reactants from the products

Answer

to show which state of matter a substance is

Question 13

In an element is diatomic, there will be how many atoms?

Accepted Answer

2

Answer

3

Answer

1

Answer

4

Question 14

Law of Conservation of Mass: Matter is neither ____________ nor _________________.

Accepted Answer

created, destroyed

Answer

solid, gas

Answer

red, blue

Answer

large, small

Question 15

Reactants are best described as:

Accepted Answer

the substances entering into the reaction

Answer

the resulting substances from the reaction

Answer

the substances left over from the reaction

Answer

the substances not involved in the reaction

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