Chem Notes
...(Kg)
☈ Volume- Liters (L)
☈ Time- Seconds (s)
☈ Electric Current- Amperes (amp)
☈ Temp.- Kelvin (K) *absolute zero = -2730 K
☈ Amount of Sub- Mole (mol)
☈ Luminous Intensity- Candela (Cd)
Prefixes:
Prefix Symbol Meaning Multiplier
(numerical) Multiplier
(exponential)
Mega M Million 1,000,000 1 x 106
Kilo k Thousand 1,000 1 x 103
Meter, Grams, Liters m, g, L None None 1 x 100
Deci d Tenth 0.1 1 x 10-1
Centi c Hundredth 0.01 1 x 10-2
Milli m Thousandth 0.001 1 x 10-3
Micro Millionth 0.000001 1 x 10-6
Nano n Billionth 0.00000001 1 x 10-9
Pico p Trillionth 0.000000000001 1 x 10-12
Significant Figure Rules:
1. Digits other than zero are always significant.
96L 61.4g 4.512g
(3sf) (3sf) (4sf)
2. Zeros to the right to the decimal are significant when they have a number preceding them that is not zero.
4.72 4.7200 82.0
(3sf) (4sf) (3sf)
3. Zeros between two other numbers that are not zero are significant.
4. Find number with least number of significant figures report answer with that number of significant figure.
Hazard Sign:
Health- Blue
Flammability- Red
Reactivity- Yellow
White- Special Hazard Info
Safety Rules:
☠ No eating, drinking, or chewing gum
☠ Follow directions; ask for clarification
☣ Do not perform an unauthorized experiment
☣ Keep aisles clear
☣ Goggles and smock on all times
☣ Dispose chemicals properly
☠ Tie back long hair; no loose, baggy clothes and sandals
☠ Report all accidents
☠ Treat all chemicals as dangerous
☠ Stand up always; never sit unless instructed
☠ Never smell chemicals directly
☠ Do not place hands near mouth or eyes
☠ Turn off gas if burner goes out
☠ Abide any verbal requests by teacher
Parts of an experiment:...
View Full Essay
