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Chapter E: Units, Measurements & Problem Solving
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- 1SI Base UnitsLength: meter - m
Mass: kilogram - kg
Time: second - s
Temperature: Kelvin - K
Amt. of substance: Mole - mol
Electric current: Ampere - A
Luminous intensity: Candela - cd - 2velocity of light in a vaccum3.00 * 10^8 m/s
- 3kinetic energythe energy due to motion
- 4Change in temp1K = 1C = 1.8F
- 5Fahrenheit to CelsiusC = (F - 32) / 1.8
- 6Celsius to KelvinK = C + 273.15
- 7SI Prefix Multiplierspeta: P - 10^15
tera: T - 10^12
giga: G - 10^9
mega: M - 10^6
kilo: k - 10^3
deci: d - 10^-1
centi: c - 10^-2
milli: m - 10^-3
micro: u - 10^-6
nano: n - 10^-9
pico: p - 10^-12
femto: f - 10^-15 - 8density- the ratio of an objects mass to its volume
- d = m/v
- physical property
- depends on temperature
- intensive property - 9intensive property- independent of the amount of the substance
- used to identify substances because they depend on the type of substance, not the amt. - 10extensive property- depends on the amt of a substance
- mass is an extensive property - 11The density of copper decreases as temp increases. Does the copper sample become lighter, heavier, expands or contracts?expands
- 12law of conservation of energy- energy is neither created nor destroyed
- although energy can change from one type to another, it can flow from one object to another, the total qty of energy does not change, it remains constant - 13difference between speed and velocityVelocity is speed w/direction
- 14speed / velocity formuladistance = displacement
speed = velocity - 15joule (J)- SI unit of energy
- mass * v^2
- kg * m^2/s^2
- small amt of energy
- use kiloJoule kJ instead - 16Kinetic Energy formula- (1/2 * mass * v^2) or (1/2 * j)
- (1/2)(kg)(m/s)^2 - 17formula: volume of a cylinderv = pi * r^2 * h
- 18formula: volume of a spherev = 4/3 * pi * r^3
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- (Chem I) General Chemistry Fichas sobre Chapter E: Units, Measurements & Problem Solving, creado por Alexandra Bozan el 18/12/2018.
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- Alexandra Bozan
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