Module 5

Question 1

Group 1

Answer 1

Alkali metals

Question 2

Group 2

Answer 2

Alkaline earth metals

Question 3

Main-group elements

Answer 3

Groups 1-2, 13-18

Question 4

Transition elements

Answer 4

Groups 3-12

Question 5

Group 15

Answer 5

Pnictogens

Question 6

Group 16

Answer 6

Chalcogens

Question 7

Group 17

Answer 7

Halogens

Question 8

Group 18

Answer 8

Noble gases

Question 9

Ionic compounds

Answer 9

Compounds made up of atoms that have exchanged electrons. Typically have high melting and boiling points.

Usually metal-nonmetal

Question 10

Covalent compounds

Answer 10

Compounds made up of atoms that share electrons. Often exist as gases, low-boiling liquids, and low-melting solids

Usually nonmetal-nonmetal

Question 11

What is the difference between empirical and molecular formulas?

Answer 11

Empirical formulas show the simplest whole-number ratio of atoms in a compound, whereas a molecular formula shows the total number of each type of atom in the compound

Question 12

How to name ionic compounds

Answer 12

Only exist as an empirical formula, so you don’t need to add prefixes

Question 13

How to name molecular compounds

Answer 13

Can exist as more than just an empirical formula, so you need prefixes to specify which compound it is

Question 14

Acids

Answer 14

Release H+ compounds when dissolved in water

Question 15

Binary acid

Answer 15

Acid comprised of one H and another nonmetallic element

Question 16

How to name binary acids

Answer 16

1. H changed to hydro-
2. Other element name gets suffix -ic
3. Add “acid” at the end

Question 17

Oxyacid

Answer 17

Acid that contain H, O, and one other element

Question 18

How to name oxyacids

Answer 18

1. Omit “hydrogen”
2. Start with the root name of the anion
3. Replace -ate with -ic, or -ite with -ous
4. Add “acid”

Question 19

How to tell the difference between binary acids and oxyacids

Answer 19

Binary acids will have hydro-
Oxyacids won’t