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AP Chem ch.1 zaske

Matter Physical material of the universe
Atoms The most infinitely small building blocks of matter
Molecules Two or more atoms joined together
States of matter Gas liquid solid
Gas No fixed volume or shape
Liquid Distinct volume no fixed shape
Solid Fixed volume fixed shape
Pure substance doesn't vary from sample to sample, same makeup every time
Elements Substances that can not decomposed into simpler pieces
Compounds Composed of two or more elements
Mixtures Combination of two or more substances with each substance retaining its own chemical identity
Law of definite proportions Elemental composition of compound is always the same
Solutions Homogenous mixtures
Physical properties Doesn't change identity ex color density melting point boiling point hardness
Chemical properties Describes the way a substance may change or react ex flammability
Intensive Do not depend on amount sampled
Extensive Depends on the amount of sample ex mass volume
giga 10^9
Mega 10^6
Kilo 10^3
Deci 10^-1
Centi 10^-2
Milli 10^-3
Micro 10^-6
Nano 10^-9
Density is Mass/volume
Celsius to Fahrenheit C°= 5/9 (°F - 32)
Fahrenheit to Celsius °F= 9/5(°C) + 32
Kelvin to Celsius K = °C + 273.15
Sig figs with decimal Go from the left
Sig fig with no decimal Go from the right
Created by: Maddieandrews24