Y2 Review of Chapter 7.4

An example of a chemical property is

• flammability

• texture

• color

• phase of matter

An example of a chemical property is

• odor

• hardness

• ability to create a new substance

• melting

You know a chemical change may have occurred if

• it melts

• it changes color

• it dissolves

• it becomes a solid

Tags

NGSS.MS-PS1-2

You know a chemical change may have occurred if

• it creates a solution

• it bubbles

• it changes shape

• it mixes evenly together

Tags

NGSS.MS-PS1-2

The only DEFINITE way to know that a chemical change has occurred is when

• is dissolves completely in water

• Mrs. Bozarth tells you

• you see a change

• a new substance is formed

Tags

NGSS.MS-PS1-2

What happens to the atoms during a chemical change?

• They bump into each other

• They bond together to make a new substance

• They mix together evenly

• Smoke

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In a chemical equation, what tells you that a reaction is taking place?

• the reactants

• the products

• fire

• arrow

In a chemical equation, what is to the left of the arrow?

• the reactants

• the products

• fire

• arrow

In a chemical equation, what is to the right of the arrow?

• the reactants

• the products

• fire

• arrow

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If 5 atoms of hydrogen (H) go into a chemical reaction, how many hydrogen atoms should there be in the products?

• 0

• 5

• 10

• 7

Tags

NGSS.MS-PS1-5