Separating mixtures, chemical reactions

What types of mixtures exist?

• Homogeneous and Heterogeneous

• Pure and partial

• Homogeneous and pure

How are mixtures separated ?

• Mixtures can be separated by heating the components

• Mixtures can be separated by filtration evaporation distillation decantation

• Mixtures can be separated into their original components using techniques

• Mixtures can be separated by magic

Irreversible changes are...

• permanent and cannot be reversed

• are temporary and can be reversed

How do you separate salt and water?

• Decantation

• Filtration

• Evaporation

• Sieving

What object do we need to separate metals from other components?

• Filtre

• Magnetic separation

• Water

• Magnet

There are 3 chemical reactions:

• Combustion, oxidation and preparation

• Conduction, oxidation and fermenzation

• Combustion, oxidation and fermentation

• Conduction, convection and fermentation.

What`s oxidation ?

• Oxidation can appear in mobile phones

• Oxidation is a chemical reaction in which some metals and food are exposed to air

• Oxidation doesn’t exist

Identify if it is Heterogeneous or Homogeneous: Milk and cereals

• Heterogeneous

• Homogeneous

Combustion is a chemical reaction that produces energy in form of light and heat.

• True

• False

How do you separate sugar and water?

• Decantation

• Distillation

• Filtration

• Evaporation