Chemical and Physical Changes in Matter

Marc and Amy were discussing chemical changes in matter. Marc mentioned a change in color, while Amy talked about the formation of new substances with different properties. Who is correct?

• Marc

• Amy

Tags

NGSS.MS-PS1-2

Marc observed a change in matter during a science experiment. Which of the following is an example of a chemical change he might have observed?

• Mixing of salt and water

• Burning of wood

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is a physical change in matter, as observed in an experiment conducted by Ferma and Amy?

• Change in form or appearance without changing chemical composition

• Change in state without changing chemical composition

Tags

NGSS.MS-PS1-4

Angelica and Marc were discussing physical changes in matter. Angelica thinks melting of ice is an example, while Marc believes boiling of water is. Who is correct?

• Angelica

• Marc

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

During a science experiment, Angelica and Marc observed a reaction. What signs should they look for to confirm that a chemical change has occurred?

• Change in temperature

• Formation of a new substance, change in color, production of gas, and release of heat or light

Tags

NGSS.MS-PS1-2

Juana and Amy are discussing the signs that a physical change has occurred. What are they likely to observe?

• Change in smell

• Change in shape, size, color, texture, and state of matter

Juana is curious about the difference between a chemical change and a physical change. Can you explain it to her?

• Chemical change involves the formation of new substances with different properties, while physical change involves a change in the form or state of matter without forming new substances.

• Chemical change involves the release of energy, while physical change does not involve any energy change.

Tags

NGSS.MS-PS1-4

Why is it important for Amy and Angelica to distinguish between chemical and physical changes in matter?

• To understand the nature of the changes and their impact on the substance.

• To confuse students

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

How can Juana and Marc reverse a physical change in matter?

• Ignore the change and hope it reverses on its own

• Apply opposite conditions or forces

How can Marbelyn and Angelica reverse a chemical change in matter during their science project?

• By using a chemical reaction

• By adding more of the same chemical

Tags

NGSS.MS-PS1-5