Chapter. 2 Flashcards
1
Q
a positive exponent (n) means 1 multiplied by the 10 (n) times
A
ex. 10^0 means 1 is multiplied by 10 zero times.
2
Q
A negative exponent (n) means 1 divided by 10 (n) times
A
ex. 1x10^-1 = 1/10 = .1
3
Q
How many rules of significant Figures are there?
A
6
4
Q
- All nonzero digits are significant
A
ex. 1.05 = 3
5
Q
- Interior zeros are significant
A
Ex. 50.1 = 3
6
Q
- Trailing zeros that fall AFTER a decimal point are significant
A
Ex. 5.10 = 3
7
Q
- Trailing zeros that fall BEFORE a decimal point are significant.
A
50.00 = 4
8
Q
- Leading zeros are not significant.
A
0.0005 = 1
9
Q
Trailing zeros at the end of a number but before an implied decimal point are ambiguous and should be avoided by using scientific notation.
A
350 is unclear, write as 3.5x10^2
10
Q
Metric system
A
units of measurement used by the scientific community
11
Q
prefix multiplier
A
changes the value of a unit by powers of 1. ex. KILO makes a meter 10^3.
12
Q
kilo-
A
1000
13
Q
hecto-
A
hundred - 10^2
14
Q
Deca
A
10^1
15
Q
Deci
A
tenth = 10 ^-1
