29 terms

# ms astorino

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matter
anything that has mass and takes up space
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 #