Unit 1 And 2 Chem

Define, observe, hypothesis, experiment, outcome of law or theory

Tera, giga, mega, Kilo, hecto, deca, base, deci, centi, milli,, micro, nano, pico

• Non zeros significant • Sandwiched zeros significant • Numbers on right of decimal significant if number is greater than 1 • Zeros on left of decimal point of 1 insignificant • Trailing zeros may/may not be significant

4/3 pi r (to the third power)

Pi r(to second power) h

Lwh

2.699g/cm3

0.789g/ml

1.06 quarts

4

16

31.103 grams

1.609 km

Matter with uniform composition and distinct properties

Concentration of 2+ substances where each substance retains specific identities (heterogenous ex. Oil and water) (homogenous, composition is the same ex. Sand and iron filings)

Removal of solids from liquids in solution

Selective separation with condensation/evaporation

Separation/distribution of components in solution with mobile and stationary phase

Substance that cannot be reduced or separated into a simpler substance, all identical atoms

Substance composed of 2+ elements chemically combined with fixed proportions, different elements chemically bonded together

Can be measured without changing composition or identity of substance ex. Melting or boiling point

Measured through end result of chemical reaction ex. Hard boiling of egg, rusting, digesting, combustion

Depends how much matter used ex. Mass, volume, length

Does not matter how much matter used ex. Area, density, temperature, boiling point