Chemical Reactions Everywhere

What is true about chemical reactions?

• They cause new substances to form.

• They often happen when two or more chemical substances combine.

• They can happen anywhere.

• all of the above

Tags

NGSS.5-PS1-4

All matter is made up of _____.

• water

• chemical substances

• salt

• oxygen

Tags

NGSS.5-PS1-1

Properties of matter are ____.

• color, texture, size

• anything that you can see, hear, feel, touch, smell, taste, or measure

• length, height, weight

• all of the above

Tags

NGSS.5-PS1-3

What is NOT evidence that a chemical reaction has taken place?

• production of gas

• color change

• production of energy in the form of heat of light

• melting

Tags

NGSS.5-PS1-4

Which one is an example of a chemical reaction with the evidence being color change?

• apple turns brown

• blue and red paint mixed together make purple paint

Tags

NGSS.5-PS1-4

Which one is an NOT an example of a chemical reaction?

• a piece of paper being cut in half with scissors

• muffins rising due to baking soda and acid producing gas bubbles

• fireworks giving off energy in the form of light

• a candle burning produces energy as light and heat when the wax mixes with oxygen in the air

Tags

NGSS.5-PS1-4

Rust happens as a result of a chemical reaction. _____ mixes with oxygen in the air to produce rust, a new substance.

• zinc

• aluminum

• iron

• copper

Tags

NGSS.5-PS1-4

True or false? The properties of a substance can change after a chemical reaction.

• true

• false

Tags

NGSS.5-PS1-4

True or false? The Statue of Liberty turned green because the Americans decided to paint it green after they received it from France?

• true

• false

Tags

NGSS.MS-PS1-2

True or false? You can't tell if a chemical reaction has happened.

• true

• false

Tags

NGSS.5-PS1-4