physical and chemical changes in matter

physical change

is the change in a substance that does not change its composition or identity.

physical changes include:

change in shape, size, and phase

melting/liquifying

when solid turns into liquid

freezing

when liquid turns to solid

condensation

when gas turns to liquid

vaporization

when liquid turns into gas

sublimation

solid state to gas w/o passing through liquid state

boiling

the point where water reaches boiling point (100 degrees celsius)

cutting

is when you cut something into pieces or slices.

hammering

he act of applying repeated, forceful blows, often with a hammer or similar tool, to a material or object

twisting

the deformation of an object caused by applying opposing rotational forces (torque) to it

pressing

a manufacturing technique using pressure to shape materials (like metal or plastics)

folding

able to be bent or rearranged into a flatter or more compact shape

bending

the process of deforming or curving an object or so

dissolving

when something dissolves into a liquid or so

elasticity

ability to return into shape after being stretched

rusting/oxidation reaction

is the result of iron being exposed to oxygen, is also a product of corrosion

corrosion

is the term used to describe the process of wearing away of certain materials

combustion/burning

is the scientific term of combustibility

photosynthesis

the process which is where plants make food

fuel oxygen heat

are needed to produce fire

irreversible

the changes in chemical change are

chemical change

is a change in which a substance is changed into a different substance

brittleness

tendency to break easily

flexibility

ability to be bent without breakiing

digestion

is the process of making food absorbable for the body

decomposition

process where by which a substance or material breaks up into parts or simpler compounds

anaerobic decomposition

is a process in which organic matter is decomposed by bacteria in the absence of free oxygen

aerobic decomposition

organic matter decomposes in the presence of free oxygen, usually on ground surfaces