L1 Chemistry - Selected Elements Revision

Question 1

Sulphur dioxide preserves food because

Accepted Answer

It is water soluble and reacts with oxygen removing it, It is soluble in water and results in a solution with low pH

Question 2

Different forms of the same element in the same state.

Accepted Answer

Allotrope

Question 3

Trend down a group on the periodic table

Accepted Answer

Increasing reactivity

Question 4

Metal/s that react with acid, with decreasing activity

Accepted Answer

Mg, Al, Zn, Fe and Pb

Question 5

Sulphur dioxide is soluble in water

Accepted Answer

True

Question 6

Metal/s that hardly react with water at all

Accepted Answer

Pb

Question 7

Reacting Metal + Steam produces

Accepted Answer

Metal Oxide + hydrogen

Question 8

These metals tend to form oxide layers rather than burn in air

Accepted Answer

Pb and Cu

Question 9

These metals tend to react with steam if they are powdered

Accepted Answer

Mg, Al, Zn, Fe

Question 10

Elements in the same period of the periodic table

Accepted Answer

Valence electrons are in the same energy level

Question 11

Metallic bonding is best described as

Accepted Answer

attraction between delocalised electrons + positive nucleii

Question 12

Elements in group 17 form ions with a charge of

Accepted Answer

1-

Question 13

Metals generally have high melting and boiling points because

Accepted Answer

the attractive forces require a lot of energy to break

Question 14

Malleability and ductility are metal properties as a result of

Accepted Answer

layers of atoms being able to slide over each other

Question 15

Reacting Metal + Acid produces

Accepted Answer

Metal salt + Water

Question 16

Metal/s that don't react with water

Accepted Answer

Cu and Ag

Question 17

Metal/s that do not react with acid

Accepted Answer

Cu and Ag

Question 18

N2 + 3H2 → 2NH3

Accepted Answer

Haber process

Question 19

Metal/s that react vigorously with acid

Accepted Answer

Na and Ca

Question 20

Properties of metals

Accepted Answer

All of the above

Question 21

Metals conduct electricity because

Accepted Answer

valence electrons are free to move in the metal structure

Question 22

These metals tend to react vigorously with water

Accepted Answer

Na, Ca (and freshly sanded Mg bubbles slowly)

Question 23

Ammonia is soluble in water and forms a basic solution

Accepted Answer

True

Question 24

Reacting Metal + Water produces

Accepted Answer

Metal hydroxide + Hydrogen

Question 25

Elements in the same group of the periodic table

Accepted Answer

Form ions with the same charge

Question 26

Ammonia collection in the lab

Accepted Answer

Inverted boiling tube by downward displacement of air

Question 27

If powdered these metals burn in air - react with the O2

Accepted Answer

Al, Zn, Fe

Question 28

Metals generally have high melting and boiling points because

Accepted Answer

there are strong forces between particles

Question 29

Ammonia production in the lab

Accepted Answer

2NH4Cl + Ca(OH)2 → 2NH3 + 2H2O + CaCl2 (dried over CaO)

Question 30

Reacting Metal + Oxygen produces

Accepted Answer

Metal Oxide

Question 31

These solid metals burn in air - react with the O2

Accepted Answer

Pb and Cu

Question 32

Allotropes

Accepted Answer

Diamond, graphite, buckyballs, Ozone and dioxygen

Question 33

Metals have relatively high densities because

Accepted Answer

the tightly packed arrangement of atoms

Question 34

Elements in group 15 form ions with a charge of

Accepted Answer

3-

Question 35

Sulphur dioxide is soluble in water and forms a basic solution

Accepted Answer

False

Question 36

A substance that dissociates into ions when melted or dissolved in water & conducts electricity

Accepted Answer

Electrolyte

Question 37

Elements in group 2 form ions with a charge of

Accepted Answer

2+

Question 38

Use of chlorine

Accepted Answer

Disinfectant

Question 39

Metals are found in this location on the periodic table

Accepted Answer

Left hand side and middle

Question 40

Elements in group 16 form ions with a charge of

Accepted Answer

2-

Question 41

Elements in group 1 form ions with a charge of

Accepted Answer

1+

Question 42

Trend down a group on the periodic table

Accepted Answer

Increasing reactivity

Question 43

The transfer of kinetic energy from heated particles to neighboring particles is

Accepted Answer

energy transfer known as thermal conductivity

Question 44

Elements in group 3 form ions with a charge of

Accepted Answer

3+

Question 45

Non-metals are found in this location on the periodic table

Accepted Answer

Right hand side

L1 Chemistry - Selected Elements Revision

Questions 45

L1 Chemistry - Selected Elements Revision

Questions 45