Physical and Chemical Changes

Front

A student mixes yellow powder with water. Which observation would prove a CHEMICAL change occurred? Options: The powder DISSOLVED in the water, The water turned the COLOR yellow, The bag's TEMPERATURE changed, The STATE OF MATTER changed

Back

The bag's TEMPERATURE changed

Tags

NGSS.MS-PS1-2

Front

Which of the following examples provides evidence of a PHYSICAL change?

• Wood is burned and releases ash and smoke
• Iron rusts over time
• When mixed, baking soda and vinegar form gas bubbles
• Boiling water bubbles when heated

Back

Boiling water bubbles when heated

Front

Which of the following options provides evidence of a CHEMICAL change?

• Wood is burned releasing ash and smoke
• Rocks separate when soil is sifted
• Boiling water bubbles when heated
• Salt dissolves in water

Back

Wood is burned releasing ash and smoke

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

A white tablet is dropped into water. The water becomes cloudy and bubbles are produced. What type of change has occurred?

Back

Chemical change

Tags

NGSS.MS-PS1-2

Front

Water is boiling on a stove, producing steam. What conclusion can you make about the change that is occurring?

Back

Steam indicates a state of matter change

Tags

NGSS.MS-PS1-4

Front

Which observations prove a chemical change occurred? Options:

Dissolving and expected color change

,

Mixing and dissolving

,

State of matter change and boiling water bubbles

,

Unexpected color change and temperature change

Back

Unexpected color change and temperature change

Tags

NGSS.MS-PS1-2

Front

Definition: "two liquids make a solid"

Back

precipitate

Front

What occurs when mixing milk and vinegar?

Back

Chemical change: precipitate

Tags

NGSS.MS-PS1-2

Front

Which of the following is true?

• A physical change produces a new substance
• A chemical change does not produce a new substance
• A physical change can produce a precipitate
• A chemical change can produce a precipitate

Back

A chemical change can produce a precipitate

Tags

NGSS.MS-PS1-2

Front

When iron is exposed to air over a long period of time, it forms rust. This is an example of what?

Back

A new substance forming

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5