Chapter 2 Day 2

Question 1

How to calculate the weighted average of an isotope?

Answer 1

a1m1+a2m2

where a is the decimal average

Question 2

Group 1A?

Answer 2

Alkali metals

lose 1 e-, become cation

Question 3

Group 2A?

Answer 3

Alkaline earth metals

lose 2 e-, become dication

Question 4

Group 3A?

Answer 4

Metals&Metalloids

lose 3 e-

Question 5

Group 4A?

Answer 5

Metals, metalloids, non-metals

lose 4 e-

Question 6

Group 6A?

Answer 6

Gain 2 e-

Question 7

Group 7A?

Answer 7

Gain 1 e-

Question 8

Group 8A?

Answer 8

Non-reactive

Noble gases

Question 9

Avogadro’s #?

Answer 9

6.022 x10^23

Question 10

Avogadro’s # AND mole relationship?

Answer 10

6.022 x10^23 particles / 1 Mol

Question 11

When adding or subtracting Molar Masses, what to look for?

Answer 11

Significant to farthest shared place after the decimal