C14.2 - Water safe to drink Flashcards Preview

GCSE Chemistry Required Practicals > C14.2 - Water safe to drink > Flashcards

Flashcards in C14.2 - Water safe to drink Deck (20):
1

The 1st step of the treatment of water from a reservoir to make potable water

The 1st step of the treatment of water from a reservoir to make potable water is at the reservoir

2

The 1st step of the treatment of water from a reservoir to make potable water is at the reservoir.
What happens as the water enters the water treatment works?

As the water enters the water treatment works, it passes through a screen

3

The 1st step of the treatment of water from a reservoir to make potable water is at the reservoir.
As the water enters the water treatment works, it passes through a screen.
This is made from what?

This screen is made from bars of metal placed close together

4

The 1st step of the treatment of water from a reservoir to make potable water is at the reservoir.
As the water enters the water treatment works, it passes through a screen.
This is made from bars of metal placed close together.
These catch what?

These catch large objects

5

The 1st step of the treatment of water from a reservoir to make potable water is at the reservoir.
As the water enters the water treatment works, it passes through a screen.
This is made from bars of metal placed close together.
These catch large objects, such as what?

These catch large objects, such as:
1. Leaves
2. Twigs

6

The 2nd step of the treatment of water from a reservoir to make potable water

The 2nd step of the treatment of water from a reservoir to make potable water is the settlement tank

7

The 2nd step of the treatment of water from a reservoir to make potable water is the settlement tank.
Sand and soil do what?

1. Sand
2. Soil
settle out

8

The 3rd step of the treatment of water from a reservoir to make potable water

The 3rd step of the treatment of water from a reservoir to make potable water is that:
1. Aluminium sulfate
2. Lime
are added to the water

9

The 3rd step of the treatment of water from a reservoir to make potable water is that aluminium sulfate and lime are added to the water.
Small particles of dirt do what?

Small particles of dirt clump together so that they sink to the bottom of the water

10

The 3rd step of the treatment of water from a reservoir to make potable water is that aluminium sulfate and lime are added to the water.
Small particles of dirt clump together so that they sink to the bottom of the water.
The sludge that collects like this is what?

The sludge that collects like this is dumped in a landfill site

11

The 3rd step of the treatment of water from a reservoir to make potable water is that aluminium sulfate and lime are added to the water.
Small particles of dirt clump together so that they sink to the bottom of the water.
The sludge that collects like this is dumped in a landfill site, where it does what?

The sludge that collects like this is dumped in a landfill site, where it forms mud

12

The 4th step of the treatment of water from a reservoir to make potable water

The 4th step of the treatment of water from a reservoir to make potable water is that the water is passed through a special filter made of fine:
1. Sand
2. Gravel

13

The 4th step of the treatment of water from a reservoir to make potable water is that the water is passed through a special filter made of fine sand and gravel.
This removes what?

This removes any remaining particles of:
1. Mud
Or,
2. Grit

14

The 4th step of the treatment of water from a reservoir to make potable water is that the water is passed through a special filter made of fine sand and gravel.
This removes any remaining particles of mud or grit, so that what?

This removes any remaining particles of:
1. Mud
Or,
2. Grit
,so that the water is clean

15

The 5th step of the treatment of water from a reservoir to make potable water

The 5th step of the treatment of water from a reservoir to make potable water is that although the water now looks clean, it may still contain harmful bacteria

16

The 5th step of the treatment of water from a reservoir to make potable water is that although the water now looks clean, it may still contain harmful bacteria.
A small amount of what is added to the water to kill any bacteria in the water?

A small amount of chlorine is added to the water to kill any bacteria in the water

17

The 5th step of the treatment of water from a reservoir to make potable water is that although the water now looks clean, it may still contain harmful bacteria.
A small amount of chlorine is added to the water to kill any bacteria in the water.
Alternatively, what can be added or used?

Alternatively:
1. Ozone can be added
Or,
2. UV light used

18

The 6th step of the treatment of water from a reservoir to make potable water

The 6th step of the treatment of water from a reservoir to make potable water is that the pH of the water is:
1. Checked
2. Corrected
so that it is neutral

19

The 6th step of the treatment of water from a reservoir to make potable water is that the pH of the water is checked and corrected so that it is neutral.
It is then stored in what?

It is then stored in:
1. Large tanks
2. Service reservoirs

20

The 6th step of the treatment of water from a reservoir to make potable water is that the pH of the water is checked and corrected so that it is neutral.
It is then stored in large tanks and service reservoirs ready to be pumped to what?

It is then stored in large tanks and service reservoirs ready to be pumped to:
1. Homes
2. Schools
3. Offices
4. Factories
,ect