1. Atoms And The Periodic Table

Question 1

What is an element

Answer 1

A substance made up of only one type of atom

Question 2

What is an isotope

Answer 2

Atoms with the same atomic number but different mass numbers

Question 3

What is ionisation

Answer 3

When an atom gains or loses electrons to obtain a stable electron arrangement (or charged)

Question 4

What is a covalent molecular

Answer 4

Separate molecules with weak intermolecular forces between them

Question 5

What is an intermolecular force

Answer 5

weak forces of attraction that exist between covalent molecules.

Question 6

do intermolecular forces need a lot of energy to be overcome

Answer 6

no

Question 7

what is an ionic lattice

Answer 7

an ordered, arrangement of positive and negative ions

Question 8

what is electrolysis

Answer 8

the process used to break down an ionic compound down into its constituent elements by passing electricity through it

Question 9

what is an ionic bond

Answer 9

a force of attraction between positive and negative ions

Question 10

what is an ionic compound

Answer 10

a compound made up of metal and non metal elements

Question 11

what is an ionic bond

Answer 11

a force of attraction between positive and negative ions

Question 12

what is a covalent network

Answer 12

a giant network of atoms held together by strong covalent bonds

Question 13

do covalent networks need a lot of force to be overcome

Answer 13

yes

Question 14

copper chloride is electrolysised, what electrode does each atom go to

Answer 14

M Copper ( + ion ) —> ( - electrode )
NM Chloride ( - ion ) —> ( + electrode)

Question 15

Is carbon dioxide covalent or ionic

Answer 15

Covalent (non metals)

Question 16

is iron oxide ionic or covalent

Answer 16

ionic (metal + non metal)

Question 17

when do ionic bonds form

Answer 17

when 2 atoms transfer electrons and become ions

Question 18

how do positive ions form

Answer 18

when metal atoms lose electrons

Question 19

how do negative ions form

Answer 19

when non metal atoms gain electrons

Question 20

what state do ionic compounds exist at at room temperature

Answer 20

solid

Question 21

what are covalent moleculars bp + mp

Answer 21

low

Question 22

what do covalent molecular compounds exist at at room temperature

Answer 22

solids, liquids and gas

Question 23

are covalent substances insulators

Answer 23

yes (except carbon graphite)

Question 24

why are covalent substances insulators

Answer 24

they are made of atoms and do not have charged particles that are free to move

Question 25

why dont ionic compounds conduct as a solid but do when dissolved in water

Answer 25

in solid form the ions are held tightly together and are not free to move and cannot conduct. when in molten form the ions are free to move and conduct.

Question 26

why are carbon electrodes used in electrolysis experiments

Answer 26

they conduct electricity and are unreactive

Question 27

are ionic substances soluble in water

Answer 27

yes

Question 28

What is the shape name of “H-Cl”

Answer 28

Linear

Question 29

what is the shape name of H2O 🔺

Answer 29

angular

Question 30

What is the shape name of NH3 (ammonia)

Answer 30

trigonal pyramidal

Question 31

what is the shape name of CH4

Answer 31

tetrahedral

Question 32

is metallic bonding found in non metal elements

Answer 32

no

Question 33

how do you describe metallic bonding

Answer 33

an array of positively charged metal ions in a sea of delocalised electrons

Question 34

why do metallic structures conduct

Answer 34

the delocalised electrons are free to move.

Question 35

what is a metallic bond

Answer 35

a force of attraction between the positive metal ions and the delocalised electrons

Question 36

do metallic structures always conduct in any state

Answer 36

yes