Chemical changes
Combustion
Is a chemical reaction that produce energy.
During the combustion the wood make energy and burn and become in smoke.
Oxidation
Some metals have a chemical reaction.
During the oxidation some metals oxidate.
Fermentation
is a process catabólico oxidation incomplete, which does not require oxygen and end product is an organic compound. according to the final products, there are various types of fermentation.
Separating mixtures
There are two types of mixtures
Heterogeneous mixture:
Is more easy for separate.
Two rocks
Homogeneous mixture:
Is very difficult for separate.
Colacao with milk
Are a lot forms for separate objects:
- Filtration
- Evaporation
- Distillation
Filtration
Evaporation
Distillation
The filtration is an operation that is used to separate particles solid, in suspension of a liquid or gas the effect of gravity empty or suspension exerted
Filtration
This experiment is to put different filters in middle part of the bottle, then pour water bottle and water comes out without bacteria
Evaporation
Evaporation there is any temperature and affects molecules that are in the free surface of the liquid
Distillation
Process by which the substance volatile a mixture separates other non-it is by evaporation and subsequent condensation of