Phase Change and Energy

Scientists increased the speed of the substance’s molecules and caused a phase change. How did they do this?

• They put the substance outside.

• They transferred energy OUT OF the substance.

• Not enough information given.

• They transferred energy INTO the substance.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The same amount of energy was transferred into two liquids substances. Later, one changed phase while the other had not. Which changed phase, and how did it change?

• The one with STRONGER attraction it is now a SOLID.

• The one with WEAKER attraction it is now a LIQUID.

• The one with WEAKER attraction it is now a GAS.

• The one with STRONGER attraction it is now a gas.

Tags

NGSS.MS-PS1-4

The same amount of energy was transferred OUT OF two liquids substances. Later, one changed phase while the other had not. Which changed phase, and how did it change?

• The one with STRONGER attraction it is now a SOLID.

• The one with WEAKER attraction it is now a LIQUID.

• The one with WEAKER attraction it is now a GAS.

• The one with STRONGER attraction it is now a gas.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

You have decided to start sealing all your letters with glittery wax because you are so "cool". Which answer BEST explains what you must do to make the SOLID wax a LIQUID?

• In order to make the SOLID wax a LIQUID you must ADD HEAT ENERGY by putting the wax in the FREEZER.

• In order to make the SOLID wax a LIQUID you must ADD HEAT ENERGY by putting the wax over a FLAME.

• In order to make the SOLID wax a LIQUID you must REMOVE HEAT ENERGY by putting the wax in an OVEN.

Tags

NGSS.MS-PS1-4

You watch your science teacher put a balloon in a bowl of liquid nitrogen and see the balloon has shrunk like a raisin. Which answer BEST explains how you know if HEAT ENERGY been ADDED or REMOVED.

• HEAT ENERGY has been ADDED. I know this because the balloon has become LARGER meaning the molecule ARRANGEMENT is FARTHER APART.

• HEAT ENERGY has been REMOVED. I know this because the balloon has become SMALLER meaning the molecule ARRANGEMENT is CLOSER.

• HEAT ENERGY has actually stayed the SAME. I know this because the balloon has NOT CHANGED meaning the molecule ARRANGEMENT is also NOT CHANGED.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

You have dropped your popsicle and are watching it become a LIQUID. Which answer BEST explains what PHASE CHANGE has occurred AND how the molecule MOVEMENT has changed?

• The PHASE CHANGE that has occurred is CONDENSATION and the molecule MOVEMENT has become FASTER.

• The PHASE CHANGE that has occurred is EVAPORATION and the molecule MOVEMENT has become SLOWER.

• The PHASE CHANGE that has occurred is MELTNG and the molecule MOVEMENT has become FASTER.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

You are relaxing on some grass when you notice LIQUID water droplets have begun to seemingly disappear off the grass leaves. Which answer BEST explains what PHASE CHANGE has occurred AND how the molecule ARRANGEMENT has changed?

• The PHASE CHANGE that has occurred is EVAPORATION and the molecule ARRANGEMENT has become FARTHER APART.

• The PHASE CHANGE that has occurred is FREEZING and the molecule ARRANGEMENT has become CLOSER.

• The PHASE CHANGE that has occurred is MELTING and the molecule MOVEMENT has become FASTER.

Tags

NGSS.MS-PS1-4

If energy is taken out of the substance, and the substance changed into a liquid,

• the substance started as a solid

• the substance started as a liquid

• the substance stayed the same

• the substance started as a gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If molecules in a substance move in place and energy is transferred into the substance

• then molecules move slower, and it will be a solid

• then molecules will move faster, and it will be a liquid

• then molecules will move faster, and it will be a solid

• then molecules will move slower, and it will be a liquid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

You are drinking a cold drink on a hot day when you notice LIQUID water has collected on the can. Which answer BEST explains what PHASE CHANGE has occurred AND how the molecule ARRANGEMENT has changed?

• The PHASE CHANGE that has occurred is CONDENSATION and the molecule ARRANGEMENT has become CLOSER.

• The PHASE CHANGE that has occurred is FREEZING and the molecule ARRANGEMENT has become CLOSER.

• The PHASE CHANGE that has occurred is EVAPORATION and the molecule MOVEMENT has become FASTER.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4