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matter

Study Slideshow

What are heterogeneous mixtures?

Mixtures where you can see the substances because they are not combined evenly.

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What are homogeneous mixtures?

Mixtures where we cannot see the different substances because they are more evenly combined.

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What do you use decantation for?

To separate mixtures of liquids and solids with diferent densities.

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What is magnetic separation used for?

It is used to separate metals from non-magnetic substances when recycling.

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What is filtration?

A filter is used to remove small particles from liquids and gases

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What are some examples of filtration?

A water treatment system, face masks and air conditioning systems.

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What is it called if we dissolve salt in water?

It is called a solution.

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What is evaporation?

When we heat water and it becomes a vapour leaving behind what was made in the solution.

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What is the process of distillation?

Distillation occurs when we heat a mixture and only one mixture is left behind.

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What happens when chemical reaction occurs?

It changes the properties of a substance and produces something different.

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What is an example of chemical reactions?

combustion, oxidation, and fermentation

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What is combustion?

A chemical reaction that produces energy in the form of heat and light.

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Which chemical reaction results in the formation of rust?

Oxidation

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How is rust formed?

Iron reacts with oxygen in the air and changes to a brown substance.

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What causes fermentation?

Fungi and bacteria that break down organic materials and produce new substances.

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What is yeast?

A fungus that ferments bread dough.

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