Atomic Structure, Bonding And Properties

Question 1

Ions

Answer 1

Metals lose electrons to form +ve ions

Non metals gain electrons to form -ve ions

Question 2

Mass number

Answer 2

Protons + neutrons

Question 3

Atomic number

Answer 3

Protons = electrons

Question 4

Isotopes

Answer 4

Atoms of the same element which have the same atomic number but a different mass number (different number of neutrons)

Question 5

Noble gases

Answer 5

Most stable element in periodic table
Monoatomic (unbonded)
Full outer shell of 8 electrons=very unreactive

Question 6

Covalent bond

Answer 6

In a covalent bond two nuclei are held together by their common attraction for the shared pair of electrons

Question 7

Discrete covalent molecular

Answer 7

Small covalent molecules
Nitrogen
Oxygen 
Carbon dioxide
Water

Question 8

Diatomic elements

Answer 8

H2
N2
F2
O2
I2
Cl2
Br2

Question 9

Molecule shapes

Answer 9

Linear 2 atoms
Bent 3 atoms
Pyramidal 4 atoms
Tetrahedral 5 atoms

Question 10

Covalent network

Answer 10

Giant lattice of covalently bonded atoms

Question 11

Elements forming networks

Answer 11

Silicon
Carbon
Boron

Question 12

Ionic bond

Answer 12

The electrostatic attraction between positive and negative ions

Question 13

Ionic lattice

Answer 13

Held together by the attraction between neighbouring oppositely charged ions

Question 14

Conductors

Answer 14

Electrons or ions are free to move

Question 15

Conduction

Answer 15

Metals- yes
Non metals- no apart from carbon in the form of graphite
Covalent- no
Ionic- yes when molten or in solution no when solid