Unit 2 Matter Review (PS.2)

Which of the following is an organic compound?

• HCl

• NaOH

• $MGSO_4$

• $C_6H_{12}O_6$

Tags

NGSS.HS-LS1-6

A student has a liquid solution with a pH of 9. The student adds vinegar to the solution lowering the pH to 5. What change occured in the solution?

• The solution changed from a neutral solution to an acidic solution.

• The solution changed from a basic solution to an acidic solution.

• The solution changed from an acidic solution to a neutral solution.

• The solution changed from an acidic solution to a basic solution

Milk has a pH that is less than pure water, but greater than coffee. What is the pH of milk?

• 7

• 6

• 5

• 8

Maple trees prefer soil that has a pH of 5.5 to 6.5. These trees grow best in soil that is —

• very acidic

• slightly basic

• very basic

• slightly acidic

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Baking soda feels soapy and has a pH of 8.5, so it is —

• pure substance

• acid

• base

• salt

Which of the following correctly describe the particle theory of matter?

• All matter is made up of particles.

• There are forces of repulsion between particles.

• Particles are sometimes still and are sometimes moving.

• A particle is the smallest piece of a substance.

• Atoms are a type of particle.

Tags

NGSS.MS-PS1-5

Matter is described as anything that has which two properties?

• volume

• color

• odor

• mass

Tags

NGSS.MS-PS1-1

A solid, liquid, and gas are all states of matter composed of —

• compounds

• organic materials

• bases

• atoms

Tags

NGSS.5-PS1-1

NGSS.5-PS1-3

What type of matter comprises the Sun?

• gas

• plasma

• liquid

• solid

Which of these best describes the particle motion taking place as CO₂ gas is exposed to freezing temperatures?

• The motion of the particles becomes random.

• The particles decrease in speed

• The motion of the particles is unchanged

• The particles move with more force.

Tags

NGSS.MS-PS1-4