Mixtures
What is a mixture?
Two or more substances mixed together.
What is a solution?
A homogeneous mixture where one substance dissolves in another.
Is muddy water a solution or suspension?
Suspension
What is all matter made of?
Tiny particles.
What state of matter has a fixed shape and fixed volume?
Solid
Is salt water a mixture or a pure substance?
Mixture.
In salt water, what is the solute?
Salt.
In a suspension, do the particles dissolve?
No
Are particles always moving?
Yes
What state of matter takes the shape of its container but keeps the same volume?
Liquid
What is a homogeneous mixture?
A mixture that is evenly mixed throughout.
In salt water, what is the solvent?
Water.
What can happen to particles in a suspension if the mixture is left still?
They can settle to the bottom.
What happens to particles when something is heated?
They move faster.
What state of matter has no fixed shape or volume?
Gas
What is a heterogeneous mixture?
A mixture that is not evenly mixed throughout.
In a solution, does the solute dissolve or stay visible?
It dissolves.
Is milk a solution, suspension or colloid?
Colloid.
In which state are particles furthest apart: solid, liquid or gas?
Gas
How do particles move in a solid?
They vibrate in fixed positions.
Is a bowl of cereal and milk homogeneous or heterogeneous? Explain.
Heterogeneous because you can see the different parts.
In sugar water, identify the solute, solvent and solution.
Sugar = solute, water = solvent, sugar water = solution.
What is one difference between a suspension and a colloid?
Suspension particles are larger and can settle out, while colloid particles are much smaller and usually stay spread throughout.
Why can gases be compressed easily?
There are large spaces between the particles.
Why can liquids flow?
Their particles can move/slide past each other.