Show:
Pure Substances
Mixtures
Homogeneous Mixture
Heterogeneous Mixture
100
What is a pure substance?
A pure substance is not mixed with any other substance or material, and cannot be separated.
100
What is a mixture?
Mixtures are two or more substances that are mixed together but not chemically joined.
100
Give an example of a homogeneous mixture
Peanut butter, ice cream, milk
100
Give 1 example of a heterogeneous mixture.
Trail Mix
200

What is something that has all identical particles?

Pure Substance

200
What are the two main types of mixtures?
Heterogeneous & Homogeneous
200
Can you take apart a homogeneous mixture? Why?
No, once they are combined the ingredient cannot return the its original state.
200
What is the difference between heterogeneous and homogeneous mixture?
Homogeneous looks the same throughout and you can't take the mixture apart. Heterogeneous can be taken apart and is very easy to tell the parts of the mixture.
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
Give an example of a homogeneous mixture that you cannot physically see, but is all around us.
Air.
300

 When you mix things together, will their physical properties change?

No

400

Can I separate a pure substance? Why?

No. It is only one type of particle so it cannot be separated.

400
What is a heterogeneous mixture?
A heterogeneous mixture DOES NOT mix evenly, and you can take it apart.
400

What is the 1st step to separate sand and salt? Think to our lab.

Put it in water to mix and let the salt dissolve. Observe after mixed.

400

Is it easier to separate a homogeneous or heterogeneous mixture?

Heterogeneous

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
Give an example of a homogeneous mixture that is not a liquid.
A nail used for wood work.
500
You have 30 seconds to name 5 heterogeneous mixtures.
Salad, chex mix, soil, bits and bites, oatmeal chocolate chip