Chemistry Crush (8th Grade)

The amount of matter an object has.

• Weight
• Mass
• Volume
• Density

Tags

NGSS.MS-PS1-5

NGSS.MS-PS2-2

Oil floats on water. The most accurate reason for this is ____.

• oil is less dense than water
• oil is immiscible (does not dissolve) in water
• oil is both less dense and immiscible with water
• water is heavier than oil

______________ is the amount of space an object occupies.

• Weight
• Mass
• Volume
• Density

What is happening at the boiling point?

• liquid to gas
• gas to liquid
• solid to liquid
• liquid to solid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Water changes its state of matter when heat is added or taken away.  When water reaches its boiling point the particles-

• are closer together
• stay the same
• are moving more rapidly
• are moving more slowly

Tags

NGSS.MS-PS1-4

Ability of one substance to dissolve in another. 

• Mixture
• Solubility 
• Melting Point

Tags

NGSS.MS-PS1-2

A gas

• has a definite shape but no definite volume
• has a definite volume but no definite shape
• has fast-moving particles

Tags

NGSS.MS-PS1-4

Balloons can be twisted into shapes because

• the force exerted changes the number of particles
• the volume of a gas is constant
• particles of gas can be compressed

Tags

NGSS.MS-PS1-4

An object that allows heat or electricity to pass through easily is a

• Insulator
• Conductor

Tags

NGSS.MS-PS3-3

What is the volume of the rock? The water level is displaced from 20 mL to 23 mL with the rock.

• 3 mL
• 23 mL
• 20 mL
• 43 mL