Properties of Matter
Chemical Changes
Chemical changes are not reversible.
Chemical changes are newly formed substances by fusing or breaking apart.
different melting or boiling points are visible when a chemical change has occurred. Or the colour and texture will change.
Examples are: when metal rusts, when something rots and when wood burns.
States of Matter
Liquid
Liquids molecules are slightly packed together.
Liquid is a substance that you are not able to pick up and flows freely but has a constant volume.
Soild
Solids molecules are packed together tightly.
A solid is a object that you are able to pick up
The object can be soft like a sponge or hard like a brick
Gas's molecules are not packed together.
Gas is a substance that will move freely into containers and more.
What happens when we're done using matter
Sometimes the matter loses or absorbs energy.
Some of it breaks down while some becomes waste and gets burned,thrown into a landfill,used for biological recycling or energy recycling
Physical changes
Physical changes are reversible.
rearranging molecules
Examples are: Erosion and when ice melts