Food Production and Waste
Molecules
Miscellaneous
STATES OF MATTER
PHYSICAL AND CHEMICAL CHANGES
100

What are the 3 Rs?

What is Reduce, Reuse, Recycle

100
In what state of matter are molecules tightly packed together?
What is a SOLID
100
What is the opposite of evaporation? 

condensation

100

What is it called when matter changes from a liquid to a solid?

what is freezing
100
A type of change that forms a new substance
What is CHEMICAL CHANGE
200

How long does it take for plastic to decompose?

What is 10 to 1000 years

200
In what state of matter are molecules spread very far apart and move very quickly?
What is a GAS
200
What is the opposite of freezing/solidification?

Melting

200

What is it called when matter changes directly from a solid to a gas?

What is sublimation

200
Name two examples of physical changes.
Answers Vary.
300

What is one way that we can help reduce the negative impact that food processing has on our environment?

Possible answers include: don't waste food, buy food locally, grow our own food, buy food with less plastic.

300

In what state of matter are the molecules spread apart a little and move around at a medium speed.

what is liquid

300

What is the opposite of deposition?

sublimation

300
What is it called when matter changes from a liquid to a gas?

What is a evaporation

300
A type of change in which no new substance is created, although the matter takes a new form
What is a PHYSICAL CHANGE
400

What type of packaging is low cost, easy to carry, and breaks down easily, but can be damaged easily and is not very durable?

Cardboard

400

The particle theory states that all matter is made up of tiny particles that are constantly doing what?

Moving - The speed the particles move depends on which state of matter they are in. 

400

Name one way to chemically change wood.

What is BURN

400
What is it called when matter changes from a gas to a liquid?

What is condensation

400
An object melting is what type of change?
What is a PHYSICAL CHANGE
500

What type of packaging is low cost, lasts a long time, and is durable, but takes a very long time to break down and can cause pollution?

Plastics

500

Matter is made up of tiny particles called?

What is atoms

500

What are clouds made of?

Water vapor

500

What is it called when matter changes from a gas directly to a solid?

What is a deposition

500
Name two examples of chemical changes.
Answers Vary.