Unit 2 Flashcards
Matter, Measurement, and Problem Solving
1
Q
uncertainty
A
estimate of amount by which measurement differs from true value
2
Q
significant figures
A
(also, significant digits) all of the measured digits in a determination, including the uncertain last digit
3
Q
precision
A
how closely a measurement matches the same measurement when repeated
4
Q
exact number
A
number derived by counting or by definition
5
Q
accuracy
A
how closely a measurement aligns with a correct value
6
Q
Density
A
Measure of how much matter you have in a given region or space
mass per unit volume
Density = mass/volume
p = m/V
7
Q
A
8
Q
A
9
Q
A
10
Q
A
11
Q
A
11
Q
A
12
Q
A
13
Q
A
14
Q
A
