Phase Change

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 decide to blow bubbles (soapy WATER) outside on a snowy day. Which answer BEST explains what has happened to the molecule ARRANGEMENT of the WATER?

• The WATER molecule ARRANGEMENT has become CLOSER.

• The WATER molecule ARRANGEMENT has become FARTHER APART, forming rings.

• The WATER molecule ARRANGEMENT has become CLOSER, forming squares.

Tags

NGSS.MS-PS1-4

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

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-PS1-4

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

NGSS.MS-PS3-4

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-PS3-5

Which answer BEST explain what molecule ARRANGEMENT tells us?

• Molecule ARRANGEMENT tells us how FAST or SLOW the atoms or molecules are moving.

• Molecule ARRANGEMENT tells us how CLOSE or FAR APART the atoms or molecules are to one another.

• Molecule ARRANGEMENT tells us how BIG or SMALL the atoms or molecules are compared to one another.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which answer BEST explains what molecule MOVEMENT tells us?

• Molecule MOVEMENT tells us how FAST or SLOW the atoms or molecules are moving.

• Molecule MOVEMENT tells us how CLOSE or FAR APART the atoms or molecules are to one another.

• Molecule MOVEMENT tells us how BIG or SMALL the atoms or molecules are compared to one another.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Your teacher asks your group to discuss molecule MOVEMENT and molecule ARRANGEMENT in a SOLID. Each of your group members shares their answer. Decide who has the BEST answer.

• Betsy says molecule MOVEMENT in a SOLID is SLOW and the molecule ARRANGEMENT is FAR APART.

• Yazmin says molecules DO NOT MOVE in a SOLID and the molecule ARRANGEMENT is CLOSE.

• Leila says molecule MOVEMENT in a SOLID is SLOW and the molecule ARRANGEMENT is CLOSE.

Tags

NGSS.MS-PS1-4

Your teacher asks your group to discuss HOW molecule MOVEMENT and molecule ARRANGEMENT in a LIQUID is DIFFERENT than in a SOLID. Each of your group members shares their answer. Decide who has the BEST answer.

• Zachary says molecule MOVEMENT in a LIQUID is SLOWER and the molecule ARRANGEMENT is FARTHER APART than a SOLID.

• Miguel says molecule MOVEMENT in a LIQUID is SLOWER and the molecule ARRANGEMENT is CLOSER than a SOLID.

• Julian says molecule MOVEMENT in a LIQUID is FASTER and the molecule ARRANGEMENT is FARTHER APART than a SOLID.

Tags

NGSS.MS-PS1-4