Chemical Reactions Review

In a _______ change, a substance changes into a different substance

• physical

• chemical

Tags

NGSS.MS-PS1-2

Which of these is NOT a sign a chemical change has occurred?

• color change

• temperature change

• bubble formation

• cutting material

Tags

NGSS.MS-PS1-2

In a chemical reaction, bonds are broken and new bonds are formed that create new substances. The bonds that are broken are called what?

• reactants

• products

Tags

NGSS.MS-PS1-1

The Law of Conservation of Mass states

• that matter exists in all states and reacts the same

• that matter can only be changed into new substances by introducing a catalyst

• that matter exists in the same state throughout any chemical change

• that matter cannot be created or destroyed

Tags

NGSS.MS-PS1-5

SELECT 2: Which of the following 2 are chemical reactions?

• sugar dissolving in water

• water turning into steam

• burning wood

• mixing baking soda and vinegar

• tearing paper

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

SELECT ALL THAT APPLY: Why is it important that chemical equations are always balanced?

• Matter cannot be created

• Matter cannot be destroyed

• Matter can only be rearranged

• Matter doe

Tags

NGSS.MS-PS1-5

In a chemical equation, the products are found on the ______ side of the arrow

• right

• left

In a chemical equation, the reactants are found on the _____ of the arrow

• right

• left

An ending substance that is made during a chemical reaction

• reactant

• product

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

A starting substance that is part of a chemical reaction

• Reactant

• Product

Tags

NGSS.MS-PS1-5