Matter = anything that has mass + takes up space

Mass= how much “stuff”

Weight= the gravitational pull on a piece of mass

Solid = fixed volume, fixed shape

Liquid = fixed volume, takes shape of container

Gas = will expand + can be compressed

All matter has two types of properties:

Chemical Properties= characteristics that are revealed only when you change the composition of the substance through chemical reactions. EX: flammability, oxidation, creation of gas or solid precipate

Physical properties= characteristics that can be observed or measured without changing the substance. EX: color, odor, taste, density

There are two types of physical properties:

Extensive properties= depends on how much of the substance you have. EX: 7 liters of water, 56 kg of cake

Intensive properties= does not depend on the amount of the given substance. EX: ice melts at 0 degrees C, lead has a density of 11.34 g/CM^3

Physical vs Chemical Changes:

Physical Change: Does not result in new substance. EX: if you melt ice you still have water that can be frozen back to ice.

Chemical Changes: when two substances react, a new substance is formed. EX: burning paper or baking a cake