Quiz about Simple Chemical Reactions

Question 1

The starting materials in a chemical reaction

Accepted Answer

Reactants

Answer

Products

Answer

Starters

Answer

Enders

Question 2

A substance that is formed as the result of a chemical reaction

Accepted Answer

Product

Answer

Reactant

Answer

Starters

Answer

Enders

Question 3

What happens in ALL chemical changes?

Accepted Answer

A new substance is formed

Answer

Change in state of matter

Answer

Bubbles are produced

Answer

An explosion

Question 4

What kind of change is burning wood?

Accepted Answer

Question 5

What type of reaction involves the breaking down of a substance into simpler substances?

Accepted Answer

Decomposition Reaction

Answer

Single Displacement Reaction

Answer

Double Displacement Reaction

Answer

Synthesis Reaction

Question 6

A copper penny turning greenish after a few years is an example of ...

Accepted Answer

Chemical Change

Answer

Physical Change

Question 7

The substances listed on the left side of a chemical equation are the

Accepted Answer

reactants

Answer

products

Answer

coefficients

Answer

precipitate

Question 8

What evidence would tell that a chemical reaction has taken place?

Accepted Answer

all of these

Answer

release of light and heat

Answer

formation of gas

Answer

formation of precipitate

Question 9

Which two processes could be considered opposites?

Accepted Answer

synthesis and decomposition

Answer

decomposition and double replacement

Answer

double replacement and substitution

Answer

substitution and synthesis

Question 10

In a chemical reaction, a hydrocarbon compound reacts with the diatomic element oxygen. What type of reaction is this?

Accepted Answer

combustion

Answer

single replacement

Answer

combination

Answer

double replacement

Question 11

In this reaction, a more active element replaces active element in the compound.

Accepted Answer

single replacement reaction

Answer

combination reaction

Answer

decomposition reaction

Answer

double replacement reaction

Question 12

During a chemical reaction,___________

Accepted Answer

Atoms are rearranged

Answer

New elements are produced

Answer

Atoms are destroyed

Answer

Elements are destroyed

Question 13

A reaction that has two compounds as reactants and two compounds as products can be described as a ______________.

Accepted Answer

Double replacement reaction

Answer

Direct combination reaction

Answer

Single replacement reaction

Answer

Decomposition reaction

Question 14

What type of chemical reaction is

Pb + FeSO₄ - PbSO₄ + Fe

Accepted Answer

single replacemect

Answer

combination

Answer

decomposition

Answer

double replacement

Question 15

A clear liquid from a flask is poured into another clear liquid in a beaker. Which of the following results of this procedure would indicate a new substance was formed?

Accepted Answer

A yellow solid forms and then settles to the bottom of the beaker.

Answer

The level of the substance in the beaker is higher after the other liquid is added.

Answer

Small white crystals are left behind in the flask that held the first liquid.

Question 16

Which of the following is NOT evidence that that a chemical reaction has occurred?

Accepted Answer

melting

Answer

produces light/heat

Answer

production of a gas

Answer

formation of a precipitate

Question 17

Which of the following is a sign of a chemical reaction?

Accepted Answer

Change in color

Answer

Change in shape

Answer

Change in size

Answer

Change in texture

Question 18

In a simple chemical reaction, what is the role of a catalyst?

Accepted Answer

To speed up the reaction

Answer

To slow down the reaction

Answer

To change the products

Answer

To react with the reactants

Question 19

What is the law of conservation of mass in chemical reactions?

Accepted Answer

Mass is conserved and remains constant

Answer

Mass is created during a reaction

Answer

Mass is destroyed during a reaction

Answer

Mass is converted into energy

Question 20

Which of the following is an example of a simple chemical reaction?

Accepted Answer

Burning of wood

Answer

Melting of ice

Answer

Boiling of water

Answer

Breaking of glass

Question 21

What happens to the atoms in the reactants during a chemical reaction?

Accepted Answer

They are rearranged to form new substances

Answer

They are destroyed

Answer

They disappear

Answer

They remain unchanged

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