chemistry review 2025

A characteristic of matter that allows it to change to something new is a ____.

• chemical change

• chemical property

• physical change

• physical property

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Density is a ____.

• chemical change

• chemical property

• physical change

• physical property

The ability of water to freeze is a ____.

• chemical change

• chemical property

• physical change

• physical property

Tags

NGSS.MS-PS1-4

Which is a chemical change?

• bending metal

• a puddle evaporating

• melting wax

• burning paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In a chemical reaction, the reactants are ___

• what you start with

• what you end with

Tags

NGSS.MS-PS1-5

In a chemical reaction, when you start with 6 carbon atoms in the reactants, you must end with _____.

• exactly 6 carbon atoms

• zero- the carbon must disappear

• only one carbon atom

• any number of carbon atoms

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Mixing two things and the beaker gets hot. This is evidence of ___

• chemical change

• physical change

• no change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Mixing two things and it fizzes and bubbles- releasing a gas. This is evidence of ___.

• chemical change

• physical change

• no change

Tags

NGSS.MS-PS1-2

The substance burns and turns black. This is evidence of ___.

• chemical change

• physical change

• no change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Mixing salt into water is a ___.

• chemical change

• physical change

• no change