Show:
States of Matter
Physical/Chemical Changes
Mass vs. Weight
Mixtures & Solutions
Density
100

What are the 3 states of matter?

Solid, liquid, gas

100

Physical or Chemical Change?

a clay snake is made from a ball of clay

Physical Change
100

What is the amount of matter inside an object?

mass

100

What is the best way to separate sand and water?

filter

100

_____ tells us how tightly packed the particles are.

Density 

200

How do the particles move in a solid?

Vibrating, particles are compacted together

200

Physical or Chemical Change?

teacher dying her hair 

Chemical change

200
What is the pull of gravity on an object?

weight

200
What tool can I use to separate iron filings and salt?

magnet 

200
When the particles are tightly packed together, the object has ______ density.

high

300

How do the particles in a gas move?

fast and freely 

300

True or False?

A chemical change is easier to reverse than a physical change.

False 

300

Holly has a cube of sugar. She crushes it into a powder. What changes about the sugar?

The shape
300

True or False

Floating is NOT a way to separate a mixture.

False

300

When the particles are NOT tightly packed together, the object has _____ density.

low

400

A liquid has a definite __________ but no definite _________. 

definite volume but no definite shape
400

True or False

A mixture is produced by a chemical combination of substances. 

False 

400

What is the difference between weight and mass?

If you go to the moon, your weight will change because the pull of gravity is different. 

If you go to the moon, your mass with remain the same because mass is never lost. 

400

True or False

A filter is a paper or a type of screen with small holes

True

400
True or False


If ice floats in water, it is less dense than the water.

True 

500

Name ALL the points.

Solid to liquid=_____ point

Liquid to solid=_______ point

Liquid to gas=_______ point

melting

freezing

boiling

500
Danielle pours lemon juice over a tablespoon of baking soda. At first, many bubbles form, but then they slowly stop forming. What is the BEST clue that this is a chemical change and not a physical change? 

bubbles form without heating the liquid

500

Dash pours 15 grams of oil and 40 grams of water into a beaker. The beaker has a mass of 90 grams. When he places the beaker with the mixture onto a balance scale, it will show a mass of _______?

145 grams 

500

How do you get the salt back from a saltwater solution?

evaporation

500

When a rock is placed in water, it sinks to the bottom of the container. Why?

The rock is more dense than the water.