Chem review

Chemical equations are used to describe

• changes in state

• Chemical changes

• chemical properties

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Color change, odor change, and bubbles are signs that a ________ might have occurred.

• energy change

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

Magnetism is a physical property that could be used to separate a mixture of

• sugar and salt

• salt and water

• iron filings and sand

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

occurs when thermal energy is added to a liquid (heated up)

• melting

• dissolving

• boiling

• freezing

Tags

NGSS.MS-PS1-4

occurs when a solute (like Kool-aid) mixes evenly in a solvent (like water)

• melting

• dissolving

• boiling

• freezing

occurs when thermal energy is added to a solid (heated)

• melting

• dissolving

• boiling

• freezing

Tags

NGSS.MS-PS1-4

occurs when thermal energy is removed from a liquid (Cooled down)

• melting

• dissolving

• boiling

• freezing

Tags

NGSS.MS-PS1-4

matter that consists of just one kind of atom

• element

• compound

• homogeneous mixture

• heterogeneous mixture

before a reaction occurs, the ingredients you have

• element

• products

• reactants

• soild

Tags

NGSS.MS-PS1-1

matter containing atoms of two or more elements bonded (linked) together

• element

• compound

• mixture

• reaction