Chemical Reactions Quiz

This model of a chemical reaction shows the correct number of atoms in the reactants and the products.

• True

• This is a trick question and can not be answered.

• False

• This is unknown.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A substance is combined with another substance and a new substance is formed. This is an example of ...

• a physical change

• a chemical change

• a weather change

• a phase change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

During a chemical reaction the temperature increased and the substances became hot. What is the type of chemical reaction that releases energy as it takes place?

• Reactants

• Precipitate

• Exothermic

• Endothermic

Tags

NGSS.MS-PS1-4

Substances after a chemical reaction takes place. Found to the right of the arrow in a chemical equation.

• Products

• Chemical Reaction

• Endothermic

• Reactants

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A balloon popping is an example of...

• a substance change

• a chemical reaction

• a physical change

• exitement!

Which of the following is an example of chemical change?

• Ice melting and becoming liquid.

• A tire is inflated with air.

• Hydrochloric acid reacts with potassium hydroxide to produce salt and water.

• Thermal energy is added to water molecules and water molecules increase their movement.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

During a chemical reaction the temperature dropped and the substances became cold. What is the type of chemical reaction that absorbs energy as it takes place?

• Reactants

• Precipitate

• Endothermic

• Exothermic

Tags

NGSS.HS-PS1-4

What is the best definition of a chemical reaction?

• A change in a substances look but the molecules stay the same, molecules increase or decrease movement caused by thermal energy.

• a reaction between the reactants to form products.

• change in a substances look and new molecules are created to form something new.

• change in substances to become new substances-molecules break apart and their atoms rearrange to form new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

16 atoms are in the reactants. According to the Law of Conservation of Mass, how many atoms should be in the products?

• 8

• 12

• 16

• 32

Tags

NGSS.MS-PS1-5

When a substance changes its phase (changes to a solid, liquid, gas, or plasma) or is modified (size, shape, etc) but remains the same substance.

• Balanced Equation

• Compound

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-4