EXAM REVISION

Question 1

Sodium has 11 electrons. When in its ground state, it’s electron configurations is:

Answer 1

1s(2) 2s(2) 2p(6) 3s(1)

Question 2

An atom orbital will always contain (Pauli principle):

Answer 2

0,1, or 2 electrons

Question 3

An atom has an electron configuration of 1s(2) 2s(2) 2p(6). In what period would it lie?

Answer 3

Period 2

Question 4

An element has 7 protons. What is it’s atomic number?

Answer 4

7

Question 5

A ‘d’ subshell contains how many orbitals?

Answer 5

5
Remember
S P D F
1 3 5 7 - orbitals
2 6 10 14 - Electrons

Question 6

Nitrogen is in group 15. What is the most likely charge of a nitride ion?

Answer 6

-3

Question 7

A decompisiton reaction is a:

Answer 7

A reaction where one compound breaks down into two or more.

Question 8

The empirical formula is:

Answer 8

Is displaying the simplest ratio of the elements in a compound

Question 9

A neutralization reaction is classified as:

Answer 9

Acid + Base > Salt + Water

Question 10

If an atom contains 16 neutrons, 15 protons and 15 electrons. The mass number would be:

Answer 10

31

Question 11

Methane formula:

Answer 11

CH(4)

Question 12

The size of a nanometre:

Answer 12

A billionth of a meter

Question 13

Graphite can be described as:

Answer 13

Soft and slippery

Question 14

What type of bonding would be found in a sample of NaCl?

Answer 14

Ionic

Question 15

The formula for alkanes:

Answer 15

C(n)H(2n+2)

Question 16

Formula for the alkenes:

Answer 16

C(n)H(2n)

Question 17

The formula for alkynes:

Answer 17

C(n)H(2n-2)

Question 18

Some properties of metallic bonding:

Answer 18

Ductile
Shiny
Conducts Electricity