Phase change/physical vs chemical change 7H

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties, such as rust forming on a nail.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a physical change?

Back

A physical change is a process that alters the form or appearance of a substance without changing its chemical composition, such as melting ice.

Front

What happens to molecules during a phase change from solid to liquid?

Back

During a phase change from solid to liquid, molecules gain energy, move apart, and begin to flow, resulting in a liquid state.

Tags

NGSS.MS-PS1-4

Front

What are the characteristics of gases?

Back

Gases have molecules that are far apart, in constant motion, and can fill the volume of their container.

Front

What is the process of melting?

Back

Melting is the phase change from solid to liquid that occurs when a substance absorbs heat.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is the state of matter characterized by definite volume but no definite shape?

Back

The state of matter characterized by definite volume but no definite shape is a liquid.

Front

What is an example of a physical change?

Back

An example of a physical change is the melting of ice into water.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Front

What is an example of a chemical change?

Back

An example of a chemical change is the rusting of iron.

Tags

NGSS.MS-PS1-2

Front

What occurs during condensation?

Back

During condensation, gas molecules lose energy and transition into a liquid state.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Front

What is sublimation?

Back

Sublimation is the phase change in which a solid turns directly into a gas without passing through the liquid state.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4