Eighth Grade Science

A substance that is made up of only one kind of atom is a(an)

• compound
• homogeneuous
• element

If a material contains two elements chemically joined in a fixed proportion, it is a(an)

• atom
• solution
• compound

Tags

NGSS.MS-PS1-1

Which of the following is a heterogeneous mixture?

• water
• solution
• jar of mixed nuts

Which of the following is a chemical change?

• sawing a piece of wood in half
• burning a piece of wood
• water boiling

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is not a physical change

• water breaking down into hydrogen and oxygen
• ice being crushed
• water boiling

Tags

NGSS.MS-PS1-5

A gas has

• definite volume and indefinite shape.   
• definite shape and indefinite volume
• indefinite shape and indefinite volume.

Tags

NGSS.MS-PS1-4

Matter that has a definite volume and indefinite shape is a

• liquid
• solid
• gas

Which subatomic particle has a negative charge?

• electron
• neutron
• proton

The energy of motion is called

• kinetic
• potential
• thermal

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which of the following statements is true according to the law of conservation of energy?

• energy cannot be created
• energy cannot be destroyed
• all of the above

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4