Facts You Should Know

Question 1

Where are protons?

Answer 1

In the nucleus

Question 2

Where are neutrons?

Answer 2

In the nucleus

Question 3

Where are electrons?

Answer 3

In the shells

Question 4

What is the charge on a proton?

Answer 4

+1

Question 5

What is the charge on a neutron?

Answer 5

0

Question 6

What is the charge on an electron?

Answer 6

-1

Question 7

What is a compound?

Answer 7

2 or more different elements that are chemically combined

Question 8

What is a mixture?

Answer 8

A mixture is 2 or more elements that may or may not be chemically combined

Question 9

What is an element?

Answer 9

A single substance that is made up of the same atoms.

It is found on a periodic able

Question 10

Which number is the number of protons on a period of table?

Answer 10

The atomic number ( smaller one)

Question 11

How do you calculate neutrons?

Answer 11

Mass number - atomic number (big - small)

Question 12

How do we find the number of electrons of an element using the periodic table?

Answer 12

The atomic number ( smaller number)

Question 13

What is the chemical name for limestone?

Answer 13

Calcium Carbonate

Question 14

What is thermal decomposition?

Answer 14

The breaking down of something by heating it

Question 15

What are the 2 products when CaCO3 is thermally decomposed?

Answer 15

CaO (calcium oxide)

and

CO2 (carbon dioxide)

Question 16

How do we test for carbon dioxide?

Answer 16

Use limewater. If the limewater goes cloudy then carbon dioxide is present.

Question 17

When we react a carbonate with a dilute acid what happens?

Answer 17

You get carbon dioxide

Question 18

When we beat a metal carbonate what happens?

Answer 18

Metal oxide + carbon dioxide

Question 19

What happens when water is added to calcium oxide?

Answer 19

Calcium hydroxide

Question 20

Give 3 advantages to limestone quarries

Answer 20

Jobs, infrastructure, use the hole for landfill afterwards

Question 21

Give 3 disadvantages to limestone quarries

Answer 21

Noise pollution, dust pollution, traffic

Question 22

How are metals found in the ground?

Answer 22

Either as an ore or a metal oxide

Question 23

What does the reactivity series show us?

Answer 23

The most reactive elements at the top and the least reactive at the bottom

Question 24

What is a reduction reaction?

Answer 24

The removal of oxygen

Question 25

What is electrolysis?

Answer 25

The use of electricity to separate a metal from its ore

Question 26

What is an alloy?

Answer 26

A mixture of metals

Question 27

What is phytomining?

Answer 27

Using plants to get small amounts of copper out of the ground

Question 28

What is bio leaching ?

Answer 28

Using bacterial to get copper from the ground

Question 29

Give 3 properties of transition metals

Answer 29

Hard, shiny, unreactive

Question 30

What is crude oil?

Answer 30

A mixture of hydrocarbons

Question 31

What is a hydrocarbon?

Answer 31

Hydrogen and carbon bonded together

Question 32

``` What are these? CH4 C2H6 C3H8 C4H10 ```

Answer 32

Methane Ethane Propane Butane

Question 33

What does ane mean ? Eg. PentANE?

Answer 33

It's an alkane

Question 34

What does ene mean? Eg methENE?

Answer 34

It's an alkene

Question 35

What is a saturated hydrocarbon?

Answer 35

An alkane ( singly bonded carbons)

Question 36

What's the formula for an alkane?

Answer 36

CnH(2n+2)

Question 37

What is acid rain?

Answer 37

Sulfur dioxide is dissolved in water

Question 38

What do catalytic converts do?

Answer 38

Remove pollution from petrol fumes

Question 39

What is climate change?

Answer 39

The change in climate due to increased levels of carbon dioxide

Question 40

What is a biofuel?

Answer 40

A fuel that recycles things and is renewable

Question 41

Give 3 advantages of biofuels

Answer 41

Less pollution, renewable, carbon neutral

Question 42

Give 3 disadvantages of biofuels

Answer 42

Land is used that could be used to grown food, habitats destroyed, can be expensive

Question 43

What is cracking?

Answer 43

Making long hydrocarbons short

Question 44

What is an alkene?

Answer 44

Carbons with double bonds

Question 45

What is the formula for alkenes?

Answer 45

CnH2n

Question 46

What is a monomer and polymer?

Answer 46

Monomer : One Polymer: Many

Question 47

How can we extract oils from plants?

Answer 47

Distillation

Question 48

What is hydrophobic?

Answer 48

Doesn't like water

Question 49

What is hydrophilic?

Answer 49

Water liking

Question 50

Name the layers of the earth

Answer 50

Outer crust, mantle, outer core, inner core

Question 51

What evidence is there that containers used to be conjoined?

Answer 51

Fossil patterns Shape of the continents

Question 52

How are continents moving apart?

Answer 52

Convection currents in the mantle

Question 53

What was in the earths early atmosphere?

Answer 53

Carbon dioxide, ammonia, sulfur

Question 54

Give 2 ways CO2 was removed from the early atmosphere

Answer 54

Photosynthesis Dissolved in oceans

Question 55

What did Miller and Urey show?

Answer 55

Amino acids

Question 56

What is an isotope?

Answer 56

An element with different numbers of neutrons

Question 57

What is covalent bonding?

Answer 57

The sharing of electrons between 2 non metals

Question 58

How many covalent bonds does carbon have?

Answer 58

3

Question 59

What is ionic bonding?

Answer 59

The bonding between a metal and non metal

Question 60

What is metallic bonding?

Answer 60

2 metals bonding together