## Chemistry Timberlake (Important) Chapter 1

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Maratila Plus on July 30, 2012

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# Chemistry Timberlake (Important) Chapter 1

 What does cholorofluorocarbons abridge to?CFCs
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#### Chemistry

What does cholorofluorocarbons abridge to? CFCs
What are the branches of chemistry? organic, inorganic, and general chemistry.
Chemistry is often ________ with other _______ It is often combined with other sciences such as geology (geochemistry), biology (biochemistry) and physics (physical chemistry).
What is the official measurement system? International System of Units (a modified version of the metric system).
Units of measurement (metric then SI)? Length = Meter
Volume = Liter = Cubic Meter
Mass = Gram = Kilogram
Temperature = Degree Celsius = Kelvin
Time = Second = Second
What does one meter equal in inches and yards? 39.4 inches
1.09 yards
What does one in equal in cm? 2.54 cm
How much is a liter compared to a quart? 1 L = 1.06 qt
1 kg = ______ pound 2.20 pounds
What is the difference between mass and weight? Weight is a measure of the gravitational pull on an object. It relies on the gravity. Mass doesn't.
Celsius Scale Water freezes at 0 degrees and boils at 100 degrees
Fahrenheit scale water freezes at 32 and boils at 212
Kelvin Scale the lowest possible temperature is O K.
A number is significant if it is... a. not a zero
b. a zero between nonzero digits
c. zero at the end of a decimal number
d. in the coefficent of a number written in scientific notation.
A zero is not significant if a. at the beginning of a decimal number ex. 0.0004 only had 1 significant digit

b. used as a placeholder in a large number without a decimal point.
How should you round off calculator answers division/multiplication? Explain. Round the answer to the amount of significant numbers for the smallest number of the two. So, lets say you are multiplying 5.32 by 4.524, you would only accept three numbers and then round the answer.
What are one of the special features of the SI or the metric system (it has to do with words)? A prefix can be placed in front of any unit to increase or decrease its size by some factor of ten. For example, mili and micro are used to make the smaller units, miligram and microgram.
centi = 100 of something ex. centidollars = 0.01
deci = 10 of something ex decidollar = .10
tera = 10 to the 12th (increases)
1 000 000 000 000
giga = 10 to the 9th (increases)
1 000 000 000
mega = 10 to the 6th (increases)
1 000 000
kilo = 10 to the third (increases)
1 000
deci = 10 to the -1 (decreases)
0.1
centi = 10 to the -2 (decreases)
.01
milli 10 to the - 3 (decreases)
.001
micro 10 to the -6 (decreases)
nano 10 to the -9 (decreases)
pico 10 to the -12 (decreases)
1 cm to the third equals? 1 cc, the volume of a cube with 1 cm on each side, or 1 mL
What are some of the relationships for length (meter) to other units? 1 m =
100 cm
39.4 in
1.09 yard
What are some of the relationships for volume (liter) to other units? 1 L =
1.06 qt

946 mL = 1 qt
What are some of the relationships for mass (kilogram) to other units? 1 kg =
1000 g
2.20 Ib

454 g = 1 ib
How would you round addition and subtraction problems? The final answer is written with the same number of decimal places as the measurement with the fewest decimal places (rounded).

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