7th grade chemistry review

Which list of states of matter is in the correct order, from the phase with the slowest molecular  movement to the phase with the fastest molecular movement.

•  Solid, liquid, gas
• Solid, gas, liquid
• Liquid, gas, solid
• Gas, liquid, solid

Tags

NGSS.MS-PS1-4

What is a chemical change? 

• The atoms do nothing
• The material increases mass
• The material changes into another type of material
• The material changes form but stays the same molecule

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following best explains the relationship between molecules and atoms?

• Molecules are atoms that have no mass.
• Molecules are made up of two or more atoms.
• Atoms have smaller parts, called molecules.
• Atoms are molecules that have a charge.

Tags

NGSS.MS-PS1-1

What is a physical change?

• The elements combine to make molecules
• The material increases mass
• The material changes into another type of material
• The material changes form but stays the same molecule

Tags

NGSS.MS-PS1-4

The tiny core of an atom containing most of the mass of the atom is the:

• Neutron
• Nucleus
• Proton
• Electron

Tags

NGSS.MS-PS1-1

What are the 3 parts of an atom?

• Product, Reactant, Mass
• Positive, neutral, negative
• Proton, nucleus, electron
• Proton, neutron, electron

How many atom are in the following molecule?
 KCrO₄

• 7
• 6
• 12
• 9

Tags

NGSS.MS-PS1-1

Label as a chemical or physical change:
Boiling

• Chemical 
• Physical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Label each change as a chemical or physical change
Hydrogen and oxygen combined to make hydrogen peroxide

• Chemical 
• Physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Label as a chemical or physical change:
Burning wood

• Chemical 
• Physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5