Pure Substances
Mixtures
Particle Theory
Homogeneous Mixture
Heterogeneous Mixture
100

What is a pure substance?

A pure substance consists of a single element or a compound/molecule that acts as one unit.

100
What is a mixture?
Mixtures are two or more substances that are mixed together but not chemically joined.
100
What happens to particles when they are frozen?
They are tightly packed and vibrate, however they cannot move.
100

Give an example of a homogeneous mixture

air, saltwater, sweet tea, steel, coffee, soft drinks, blood

100
Give 1 example of a heterogeneous mixture.
Trail Mix
200
What are the two main types of pure substances?
Elements and Compounds
200
What are the two main types of mixtures?
Heterogeneous & Homogeneous
200
What is something that has all identical particles?
Pure Substance
200

Can you take apart a homogeneous mixture? Why?

Yes! While it takes time some homogenous mixtures can be separated.

200

What is the difference between heterogeneous and homogeneous mixture?

Homogeneous looks the same throughout, is evenly distributed and takes time to take the mixture apart. Heterogeneous can be taken apart and is not uniform or evenly distributed.

300
The periodic table contains what?
Elements
300
What does homogeneous mean?
When a mixture does mix evenly-appears too look the same throughout.
300
What happens to the particles of an ice cube when they are heated up? Give 3 characteristics.
They melt, and progressively move faster-away from each other and increase in space.
300
Give an example of a homogeneous mixture that you cannot physically see, but is all around us.
Air.
300

Name one property of a heterogenous mixture

You can often distinguish the individual parts

400
What is a compound? Give an example to support your answer.
A compound is a substance formed when two or more elements are chemically joined (Example: NaCl aka salt)
400
What is a heterogeneous mixture?
A heterogeneous mixture DOES NOT mix evenly, and you can take it apart.
400

What is the law of Conservation of Mass?

During a physical or chemical change, Mass cannot be created or lost.

400
What two things do you need to create a homogeneous mixture? Be specific.
Solute and Solvent.
400
How do you spell Heterogeneous backwards? Close your eyes and spell it!
suoenegoreteh
500
Give three examples of an element.
Iron (Fe), Sodium (Na), Hydrogen (H) etc...
500
What happens when I combine a solute and a solvent?
You get a solution.
500
The three states of matter are also known as:
Solid, Liquid & a Gas
500

Give an example of a homogeneous mixture that is not a liquid.

solid alloys like steel or brass, air, 

500
You have 30 seconds to name 5 heterogeneous mixtures.
Salad, chex mix, soil, bits and bites, oatmeal chocolate chip
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