2.1.2

Question 1

What is the charge of ions in group 1?

Answer 1

+1

Question 2

What is the charge of ions in group 2?

Answer 2

+2, but some transition metals would have different numbers of ions so the roman numerals indicate the charge of the ion.

Question 3

What is the charge of ions in group 3?

Answer 3

+3

Question 4

What is the charge of ions in group 5?

Answer 4

-3

Question 5

What is the charge of ions in group 6?

Answer 5

-2

Question 6

What is the charge of ions in group 7?

Answer 6

-1

Question 7

What is the charge of ions in group 8?

Answer 7

These do not form ions as they are stable and have a full outer shell.

Question 8

What is the charge of ions in group 4?

Answer 8

These do not form ions they only bond covalently.

Question 9

What is a binary compound and what are the rules for naming them?

Answer 9

A binary compound is a compound that contains two elements,

• use the name of the first element then change the ending of the second to -ide
• for metal ionic compounds use the metal name first.

Question 10

When writing the charge what comes first number or +-?

Answer 10

Number then +/-

Question 11

What are poly atomic ions?

Answer 11

Ions containing more than two elements?

Question 12

Nitrate?

Answer 12

NO3(-)

Question 13

Silver ion?

Answer 13

Ag(+)

Question 14

Zinc ion?

Answer 14

Zn(2+)

Question 15

Sulfate?

Answer 15

SO4(2-)

Question 16

Carbonate?

Answer 16

CO3(2-)

Question 17

Hydroxide?

Answer 17

OH(-)

Question 18

Ammonium?

Answer 18

NH4(+)

Question 19

Which elements exist as small molecules?

Answer 19

H2, O2, N2, F2, Br2, Cl2, I2, P4

Question 20

What are the state symbols?

Answer 20

(s) =solid,
(l) =liquid,
(g) =gas,
(aq) =aqueous

Question 21

What exists as (aq) ions in solution?

Answer 21

• Soluble ionic compounds

- Strong acids and bases

Question 22

What do not exist as (aq) ions in solution?

Answer 22

• Insoluble ionic compounds
• Metal Hydroxides
• Covalent Compounds