States of Matter
Density
Pure Substances
Mixtures
Floating and Sinking
100

What are the 3 states of matter?

Solid, liquid, gas

100

What is density?

The amount of matter inside of a limited amount of space

100

What is a pure substance?

Anything that cannot be broken down further

100

What is a mixture?

Anything that can be separated through physical means

100

Why would something float in water?

It has a density less than 1

200
Out of the 3 states of matter, which one has the most amount of energy?

Gas

200

What is the density of water?

1

200

What are the 2 types of pure substances?

Elements and Compounds
200

What are the 2 types of mixtures?

Homogeneous and Heterogeneous 

200
An object has a density of .8 g/mL will it float or sink in water?

Float

300

Explain the movement and energy of particles in a solid

They vibrate and don't have a lot of energy
300

What is the formula for density?

Density = mass divided by volume

300

What is an element?

Just one type of atom 
300

What is a heterogenous mixture?

A mixture that does not have a uniform composition throughout.
300

A gas has a density of 1.8 g/L will it float or sink in air which has a density of 1.16 g/L

Sink

400

Explain the movement and energy of particles in a liquid

They slide past each other and have more energy than a solid, but less energy than a liquid

400

True or False: An object's density could change

FALSE

400

What is a compound?

2 or more DIFFERENT types of atoms bonded together

400

What is a homogeneous mixture? List the 2 types of them

A homogeneous mixture is something that has a uniform composition throughout. The two types of them are alloys and solutions. 

400

Why does hot air rise and cold air sink?

Hot air is less compared to cold air

500

List and define at least 4 of the phase changes between the states of matter

Freezing: liquid to solid 

Melting: Solid to liquid 

Evaporation: Liquid to gas

Condensation: Gas to liquid

Deposition: Gas to solid

Sublimation: Solid to gas 


500

If I cut an object in half, what will happen to it's mass, volume and density?

It's mass and volume will be cut in half, but it's density will remain the same

500

What are the similarities and differences between compounds and molecules? Give an example of something that is a compound AND a molecule.

Both have at least 2 atoms bonded together, but compounds are different because compounds need at least 2 DIFFERENT types of atoms bonded together. Water is a great example because it has hydrogen and oxygen bonded together. 
500

What are some similarities and differences between pure substances and mixtures?

Both pure substances and mixtures consist of matter. Pure substances are things that cannot be separated through physical means. Mixtures can be as the things mixed in them keep their identity. 

500

Put the following liquids in how they would rest in a cup from the top to the bottom. 

Water (density is 1.0 g/mL)

Corn syrup (density is 1.4 g/mL)

Vegetable oil (density of .9 g/mL) 

Dish soap (density of 1.03 g/mL)

On top:

vegetable oil

Water

Dish Soap

Corn syrup (on the bottom)

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