Gravity
COMBUSTION
Weight
Chemical change
Force
Friction
Buoyancy
Combustion
Oxidation
Fermentation
It produces heat, light and a new substance
Where a substance reacts with oxygen
Makes an object float
is the result of a chemical reaction that creates a new substance with different properties
Occurs when two objects rub against each other
Fungi or bacteria change organic substances into another substances
chemical reaction between oxygen and a substance
Is a push or a pull on an object
Attracts objects to each other.
Is a force generated by the gravitational atraction