How can we separate mixtures into pure substances? | Starter Quiz | Oak National Academy

What is a formulation?

• A mixture made up of set proportions.

• A mixture of metals.

• A mixture of two or more different substances.

• A pure substance.

Which of the following are formulations? Pick 2 correct answers.

• Air

• Medicines

• Paint

• Pure iron

Does the amount of each substance in the formulation need to be equal?

• No

• Yes

Does the proportion of each substance need to be the same each time the formulation is made?

• No

• Yes

If you want to make double the amount of formulation what do you need to do?

• Double the amount of each substance.

• Double the amount of the most important substances.

• Half the amount of each substance.

• Use the same amount of each substance.