Generation Genius Chemical Reactions

When something burns, it is a..

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Since gas is detected during the candy + soda demo, it is an example of a chemical change.

• True

• False

Tags

NGSS.MS-PS1-2

What is the evidence that the gas made in the mentos + soda demo was carbon dioxide?

• The match started to glow brighter

• The match went out

• The match made a POP sound

• Nothing happened

Tags

NGSS.MS-PS1-2

Which of these is the most reliable way to see if a new gas has formed?

• Fill up a balloon

• Flame test

• Measure temperature

• Look at it

Tags

NGSS.MS-PS1-2

How does Hydrogen react in a flame test?

• Match glows brighter

• Match goes out

• Makes a POP sound

• Nothing happens

Milk spoiling is an example of which type of change?

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is an example of a chemical reaction that releases thermal energy?

• An instant cold pack being used on an injury

• A fire burning

• Ice melting on a hot day

• Water freezing in a freezer

Tags

NGSS.MS-PS1-4

What do hand warmers use to release thermal energy?

• A physical reaction that freezes water.

• A chemical reaction.

• An increase in pressure.

• Microwaves.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-6

What do chemical reactions that release thermal energy cause in their surroundings?

• Particles to vibrate slower

• Particles to vibrate faster

• Instant cold packs to activate

• Light energy to be absorbed

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Which of the following is a sign of a chemical reaction occurring?

• Change in color

• Change in shape

• Change in size

• Change in texture

Tags

NGSS.MS-PS1-2