Chemistry Unit Test 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 the definition of the conservation of mass?

• a.  Reactants have more atoms than products
• a.  Products have more atoms than reactants
• a.  Reactant and products have the same number of atoms
• a.  Reactants have more atoms than the products

Tags

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 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

           2H₂O₂ = 2H₂O +O₂   
             100g            ?       

• 50g
• 200g
• 25g
• 100g 

Tags

NGSS.MS-PS1-5

Label as a chemical or physical change:
Boiling

• Chemical 
• Physical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Label as a chemical or physical change:
Burning wood

• Chemical 
• Physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which is NOT evidence a chemical reaction occurred?

• Precipitate
• Color change
• Phase change
• Gas produced

Tags

NGSS.MS-PS1-2

Which of the following substances are elements?

• water

• salt

• carbon dioxide

• hydrogen