Chemistry Semester Final

is anything that has mass and takes up space.

• matter

• density

• volume

• energy

The theory that energy changes the speed of the molecules in matter is called

• Kinetic Molecular Theory

• Potential Molecular Theory

• Big Bang Theory

• Kinetic Atomic Theory

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

Gas molecules have ____________ energy than molecules in a liquid.

• more

• less

Tags

NGSS.MS-PS1-4

If all particles in a substance stop moving it is called

• absolute zero

• frozen

• melted

• below zero degrees celcius

Tags

NGSS.MS-PS1-4

What happens to the molecules of a compound when it changes state from solid to liquid?

• They gain kinetic energy and begin to move faster.

• They gain potential energy and begin to move slower.

• They gain kinetic energy and begin to move slower.

• They gain kinetic energy and they go through a chemical change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the atomic symbol of Nitrogen

• Ni

• N

• Na

• NI

What is the element represented by He?

• Hydrogen

• Helium

• laughing gas

What is need to change the state of matter?

• energy

• heat

• cold

• a heat pump

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

An observation made with your senses

• Qualitative observation

• Quantitative observation

• temperature

• conclusion

What is a control?

• a variable that is unchanged to compare results to

• a changed variable

• a hypothesis

• a conclusion