Review 1: Chemistry

What is the name of the solid that forms after some solutions react chemically?

• Colloid

• Precipitate

• Solid

• Mixture

Distillation is the process of separating liquids by using _____.

• A catalyst

• Precipitation and transpiration

• a centrifuge

• evaporation and condensation

Which is a chemical change?

• Melting ice

• A candle burning

• Boiling water

• frost forming inside the freezer

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which occurs when atoms link together in news ways to create a substance different from the original substances?

• A physical change

• A nuclear reaction

• a chemical change

• an inversion

Which of the following indicate that a chemical reaction has occurred?

• The formation of gas bubbles

• An odor

• a change in color

• all of these indicate a chemical reaction

What is needed for a combustion reaction to occur?

• Nitrogen

• Helium

• oxygen

• iron

When reactants form products, a(n) ______ has occurred.

• Base

• Acid

• Chemical Reaction

• Mixture

A solid formed by the chemical reaction of some solutions is a ________.

• Mixture

• Precipitate

• Reactant

• Base

Which mixture is a solution?

• Muddy water

• potting soil

• cranberry juice

• milk

In a colloid, particles are scattered throughout and block the passage of light.

• True

• False

Tags

NGSS.MS-PS4-2