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matter

anything that has mass and takes up space

graduated cylinder

used to measure the volume of a liquid

mass

measures the amount of matter within an object - does not depend on gravity

volume

the amount of space an object occupies

weight

is affected by the amount of gravity pushing down on an object

Volume of a regular shaped object

= length x width x height

Volume of an irregular shaped object

displacement = v2 - v1

Conservation of Matter

a change can occur in a substance either physically or chemically but mass can neither be created or destroyed

Density

Mass / Volume

Density of a substance

is constant no matter how much or little you have of that same substance

Density of H2O

Liquid = 1 g/mL Solid = 0.91 g/mL Gas = 0.0006 g/mL

Atom

the basic unit of matter

Compound

when two or more different atoms bond together

Molecule

when two or more atoms bond together, it doesn't matter if they are the same or different

Solid

molecules close together and vibrate

Liquid

molecules have some space between and slide

Gas

molecules have a lot of space between and flow

Molecules Heated

speed up

Molecules Cooled

slow down

Physical property

can be changed without changing the actual substance

Chemical property

is what is changed to turn one substance in a brand new substance

Evaporation

liquid to a gas

Condensation

gas to a liquid

Freezing

liquid to a solid

Melting

solid to a liquid

Sublimation

gas to a solid or a solid to a gas

Proton

positive charge found in the nucleus = Atomic #

Electron

negative charge found in the electron cloud = Atomic #

Neutron

neutral charge found in the nucleus = Atomic Mass - Atomic #

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