Chemistry Mid-Term Flashcards
1
Q
Base units
A
meters, grams, liters, seconds, etc.
2
Q
Scientific Notation
A
Must be between 1-10| + exponents = larger #, - exponents = smaller # (ex. 36,000 = 3.6 X 10⁴)
3
Q
Accuracy
A
How close a measurement is to the correct #
4
Q
Precision
A
How close measurements are to each other.
5
Q
Percent error
A
experimental value-actual value/accepted x 100
6
Q
Spread
A
highest value - lowest value /2
7
Q
Metric system
A
Based on multiples of 10
8
Q
Kilo(k)
A
10³
9
Q
hector (h)
A
10²
10
Q
deca (da)
A
10¹
11
Q
deci (d)
A
10^⁻1
12
Q
centi (c)
A
10^-2
13
Q
milli (m)
A
10^-3
14
Q
Error
A
Experimental - Actual —– negative = below actual value, positive = above actual value
15
Q
Density
A
A ratio of the amount of matter per unit of volume
Mass/Volume= Density
