Chapter 2 Day 2 Flashcards
1
Q
How to calculate the weighted average of an isotope?
A
a1m1+a2m2
where a is the decimal average
2
Q
Group 1A?
A
Alkali metals
lose 1 e-, become cation
3
Q
Group 2A?
A
Alkaline earth metals
lose 2 e-, become dication
4
Q
Group 3A?
A
Metals&Metalloids
lose 3 e-
5
Q
Group 4A?
A
Metals, metalloids, non-metals
lose 4 e-
6
Q
Group 6A?
A
Gain 2 e-
7
Q
Group 7A?
A
Gain 1 e-
8
Q
Group 8A?
A
Non-reactive
Noble gases
9
Q
Avogadro’s #?
A
6.022 x10^23
10
Q
Avogadro’s # AND mole relationship?
A
6.022 x10^23 particles / 1 Mol
11
Q
When adding or subtracting Molar Masses, what to look for?
A
Significant to farthest shared place after the decimal
