Pure Substances
What is a pure substance?
A pure substance is not mixed with any other substance or material, and cannot be separated.
What is a mixture?
Mixtures are two or more substances that are mixed together but not chemically joined.
What happens to particles when they are frozen?
They are tightly packed and vibrate, however they cannot move.
Give an example of a homogeneous mixture
Peanut butter, ice cream, milk
Give an example of a suspension and define it.
Clumps of a solid or drops of a liquid are scattered. Ex. sand and water, tomato juice and muddy water, etc.
What are the two main types of pure substances?
Elements and Compounds
What are the two main types of mixtures?
Heterogeneous & Homogeneous
What is something that has all identical particles?
Pure Substance
Can you take apart a homogeneous mixture? Why?
No, once they are combined the ingredient cannot return the its original state.
What is a colloid? Give an example.
Small particles are evenly distributed, similar to a solution but they aren't fully dissolved.
Ex. milk
The periodic table contains what?
Elements
What does homogeneous mean?
When a mixture does mix evenly-appears too look the same throughout.
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.
Give an example of a homogeneous mixture that you cannot physically see, but is all around us.
Air.
What is Ms. Paille's favourite food?
Ice Cream
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)
What is a heterogeneous mixture?
A heterogeneous mixture DOES NOT mix evenly, and you can take it apart.
Ms.Paille's favourite NHL team?
The Nashville Predators
What two things do you need to create a homogeneous mixture? Be specific.
Solute and Solvent.
What is an emulsion? Give an example.
Two or more liquids that do not normally mix. One is dispersed in the other. Often cloudy or coloured.
Ex. mayonaise, butter
Give three examples of an element.
Iron (Fe), Sodium (Na), Hydrogen (H) etc...
What happens when I combine a solute and a solvent?
You get a solution.
The three states of matter are also known as:
Solid, Liquid & a Gas
Give an example of a homogeneous mixture that is not a liquid.
A nail used for wood work.
You have 30 seconds to name 5 heterogeneous mixtures.
Salad, chex mix, soil, bits and bites, oatmeal chocolate chip