States of Matter and Energy

A state of matter that has a definite volume and shape.

• solid

• liquid

• gas

• matter

At 0 degrees Celsius, water _________.

• evaporates

• boils

• freezes

• remains the same

Tags

NGSS.MS-PS1-4

At 100 degrees Celsius, water __________________.

• freezes

• stays the same

• evaporates

• condenses

Tags

NGSS.MS-PS1-4

Sand is a ___________________.

• liquid
• solid
• gas

Tags

NGSS.MS-PS1-4

Adding HEAT to matter causes its particles to:

• move faster and farther apart

• Move slower and farther apart

• Move faster and closer together

• Move slower and closer together

Tags

NGSS.MS-PS1-4

Solid carbon dioxide, commonly known as dry ice, changes from solid to vapor at room temperature. Predict the change in the motion of the carbon dioxide molecules while it changes state at room temperature.

• The molecules lose their energy and slide past each other.

• The energy of the molecules increases, but the spaces between them decrease.

• The molecules start vibrating in their positions with higher energy.

• The energy of the molecules and the spaces between them increase.

Tags

NGSS.MS-PS1-4

Dry ice is a solid form of carbon dioxide. At about room temperature, dry ice will turn from solid directly into a gas. This process is known as

• melting

• boiling

• evaporation

• sublimation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The diagram shows the changes in state

of H2O, the chemical formula for water.

What process at Label Y is occurring?

• Evaporation

• Freezing

• Melting

• Boiling

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Water puddles on a sidewalk evaporate when the Sun heats the water. Which of these BEST describes what is happening as the water evaporates?

• Water changes phase as it releases heat to the environment.

• Water boils as it absorbs energy from the sidewalk.

• Water becomes a gas as it absorbs energy from the Sun.

• Water evaporates as its thermal energy is transferred to the air.

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

Raphael is studying the movement of water molecules as ice changes from a solid to liquid water. Which statement best describes the changes in the movement of the water molecules as heat causes the ice to melt?

• The molecules in the solid stay tightly connected and do not move. As heat is added, the molecules in the liquid move far apart and do not interact.

• The molecules in the solid move freely around one another and do not interact. As heat is added, the molecules are pushed closer together and begin to interact with one another.

• The molecules in the solid are in a rigid lattice and vibrate more rapidly. As the ice melts, the molecules in the liquid move more freely but are still attracted to each other and pack more tightly.

• The molecules in the solid are unmoving in a rigid lattice. As the ice melts, the molecules start to vibrate, and then release from the lattice structure, moving freely as they drift farther apart to form a liquid.

Tags

NGSS.MS-PS1-4