Which of these is NOT a pure substance?

What is a mixture that has the same composition throughout called?

Which of the following is a method to separate a mixture?

What do we call a solution where no more solute can dissolve at a given temperature?

Milk is an example of what type of mixture?

Which process is used to separate cream from milk?

What is the purest form of iron?

The process of changing a solid directly into a gas is called:

Which of these is an example of a heterogeneous mixture?

What is the tyndall effect?