Unit 1 Flashcards
1
Q
What is the A?
A
X
Z
A
atomic mass (protons + neutrons)
2
Q
What is the Z?
A
X
Z
A
atomic number (just protons)
3
Q
Formula for average atomic mass:
A
∑(fractional abundance)(isotopic mass)
4
Q
Rules of Significant Figures
A
• all non-zeros are significant
• zeros between non-zeros are significant
• zeros to the left of non-zeros are non-significant
• zeros to the right of non-zeros are sometimes significant
• add//subtract sig figs = round to # w/ fewest decimal places (DO NOT ROUND EARLY)
• multiply/divide sig figs = round to # w/ fewest sig figs
5
Q
Tera (T)
A
1,000,000,000,000
6
Q
Giga (G)
A
1,000,000,000
7
Q
Mega (M)
A
1,000,000
8
Q
Kilo (k)
A
1,000
9
Q
Deci (d)
A
0.1
10
Q
Centi (c)
A
0.01
11
Q
Milli (m)
A
0.001
12
Q
Micro (µ)
A
0.000001
13
Q
Nano (n)
A
0.000000001
14
Q
Pico (p)
A
0.000000000001
