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Question 1

Proton relative mass and relative charge

Answer 1

mass: 1
charge: +1

Question 2

Neutron relative mass and relative charge

Answer 2

mass: 1
charge: 0

Question 3

Electron relative mass and relative charge

Answer 3

mass: 0.001
charge: -1

Question 4

The elements in the periodic table are arranged in order of increasing…

Answer 4

Atomic number

Question 5

Elements in the same group in the periodic table have the same number of

Answer 5

Electrons in their outer shell

Question 6

Which particles have the same mass?

Answer 6

Protons and neutrons

Question 7

What does the atomic number tell you and where is it located?

Answer 7

The number of protons and electrons and it is below the element

Question 8

What does the mass number tell you and where is it located?

Answer 8

The total number of protons and neutrons and it is above the element

Question 9

How do you find the number of neutrons in an element

Answer 9

Mass number - atomic number =

Question 10

What is an isotope?

Answer 10

atoms with the same number of protons but different numbers of neutrons.

Question 11

Where are protons found?

Answer 11

The nucleus

Question 12

Where are neutrons found?

Answer 12

The nucleus

Question 13

Where are electrons found?

Answer 13

The shells

Question 14

Two components of the structure of a metal

Answer 14

1. A lattice of positive metal ions

2. A ‘sea’ of delocalised electrons

Question 15

Describe metallic bonding

Answer 15

electrostatic attraction between the positive metal ions and the negative delocalized electrons

Question 16

Three properties of metals

Answer 16

1. HIGH MELTING POINTS - metallic bonding is usually very strong so lots of energy is needed to break it
2. CONDUCT ELECTRICITY - the delocalised electrons are free to move within the lattice
3. MALLEABLE - the layers of metal ions can slide over each other

Question 17

What is thermal decomposition?

Answer 17

A reaction where heat energy is used to break down a substance

Question 18

Word equation for metal carbonates thermally decomposing

Answer 18

Metal carbonate →Metal oxide + Carbon dioxide

Question 19

What is downward delivery?

Answer 19

Carbon dioxide is denser than air, so it is often collected by downward delivery. That means it just sinks to the bottom of a tube and stays there until you want to use it

Question 20

Higher solid surface area increases rate because…

Answer 20

More of the solid is exposed to other particles
So the collision frequency is higher
So there are more successful collisions per unit time

Question 21

Higher concentration/ gas pressure increases rate because

Answer 21

There are more particles per unit volume
So the collision frequency is higher
So there are more successful collisions per unit-time

Question 22

Higher Temperature increases rate because

Answer 22

The particles have more Kinetic energy
So the percentage of collisions with enough energy
is higher
So there are more successful collisions per unit
time

Question 23

Catalysts increase rate because

Answer 23

They provide an alternative route with lower activation energy
So the percentage of collisions with enough energy is higher so there are more successful collisions per unit time