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English 29 Public

Questions about matter, seperation techniques, combustion, oxidation and fermentation

Study Slideshow

What is a pure substance?

A pure substance is made up of one type of molecule.

20

Name two types of mixtures

Homegeneous and heterogeneous

10

What is a homogeneous mixture and give an example

Mixtures that have a consistent colour and texture ex. chocolate etc

15

What is a heterogeneous mixture and give an example

A mixture that has a varied colour and texture ex. a salad

15

What is a solution? Name the different parts.

Is a mixture of one or more liquids with one or more other substances. Solute and solvent.

25

Give an example of a solution and it's different parts.

Students own answer

15

Name three types of separation techniques.

Filtration, evaporation and distillation

15

Can we separate a chemically combined mixture?

No

5

How can we separate an insoluble solid from a mixture? and give an example

Filtration. Soil/coffee can be filtered from water

10

How can we seperate a soluble solid from a solution and give an example?

Evaporation. Salt from salt water through the heat from the sun.

15

How can we separate a liquid from a solution or two liquids? Give an example.

Distillation. Alcohol from water.

15

How can we seperate sand from sugar?

Filtration and evaporation

15

Can we reverse the effects of a chemical reaction?

No

10

What three things do you need for combustion to take place?

Oxygen, heat and fuel

15

What type of reaction produced thermal energy?

An exothermic reaction

15

Give three examples of combustion use in our everyday lives.

Students own answers

15