Chemical Reaction Classification

Which of the following is NOT an example of a chemical reaction?

• Dissolving salt

• Burning wood

• Baking a cake

• Rusting iron

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Starting substances to the left of the arrow in a chemical equation are called ____. (number 4)

• products

• catalysts

• byproducts

• reactants

Tags

NGSS.MS-PS1-2

Which word equation best describes a chemical reaction?

• Products -> Reactants

• Reactants + Energy -> Products

• Reactants -> Products

• Reactants <-> Products

Tags

NGSS.MS-PS1-5

Which of the following is a statement of the Law of Conservation of Mass?

• Mass can be created in a chemical reaction.

• Mass is conserved in a chemical reaction; it is neither created nor destroyed.

• The total mass decreases during a reaction.

• Mass is only conserved in physical changes.

Tags

NGSS.MS-PS1-5

Combining substances to form new substances is called

• Chemical reaction

• Physical reaction

• Exothermic reaction

• Endothermic reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A characteristic of matter that can only be observed when matter is changed into a new kind of matter.

• Chemical

• Physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• Product 

• Reactant

• Starters

• Enders

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the equation shown, what are the reactant(s)?

• N₂ + H₂

• NH₃

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Baking soda and vinegar combine to make carbon dioxide

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A characteristic of matter that can be observed by changing the composition of the substance (making a new substance) is called

• an extrinsic property

• an intrinsic property

• a physical property

• a chemical property