Pure Substances
Mixtures
Particle Theory
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
What happens to particles when they are frozen?
They are tightly packed and vibrate, however they cannot move.
100
Clear nail polish, ice cream, milk
Homogeneous mixture
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/separate a homogeneous mixture, like iced tea?
Yes. By evaporating the water, the sugar will be remain.
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
What happens to the particles of an ice cube when they are heated up? Give 3 characteristics.
They move faster
Greater kinetic energy
Increase in space between them
300
Give an example of a homogeneous mixture that you cannot physically see, but is all around us.
Air.
300
Describe the particles of a heterogeneous (mechanical) mixture.
Unevenly mixed particles so the different kinds of matter can be seen by the eye
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
How can you describe the particles in a Gas?
Indefinite shape. Indefinite volume. Constantly expands because the Particles move quickly
400
What kind of process is required to separate a mixture?
Physical processes are required.
400
How do you spell a mixture that has two or more visible substances backwards?
suoenegoreteh
500
Give three examples of an element.
Iron (Fe), Sodium (Na), Hydrogen (H) etc...
500
Mixture of elements and compounds
500
Matter found in neon lights.
Plasma
500
Air (smog), Trail-mix, Lucky Charms, & Sodium Chloride (NaCl). Which does not belong? Why?
Sodium Chloride because it is a pure substance (compound) and the rest are heterogeneous mixtures.
500
You have 30 seconds to name 5 heterogeneous mixtures.
Salad, chex mix, soil, bits and bites, oatmeal chocolate chip