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WorksheetsPowerPoint 2 Scientific Principles
Total questions: 22
Worksheet time: 2hrs 50mins
What are the different states of water?
(more than one answer)
Steam
Wet
Ice
Damp
Liquid
From 4-99 degrees water will expand by how much?
1%
4%
50%
150%
When water turns to ice it will expand by how much?
1%
5%
10%
100%
When water turns to steam it will expand by how much?
1600 times it size
600 times its size
100 times its size
At what temperature does water turn to ice?
0 °C
-100 °C
-10 °C
100 °C
Which is another name for water?
WTR2
W2O
O2H
H2O
Is water regarded as a solvent?
No
Yes
Which classifications of water are acidic?
(more than one answer)
Soft water
Temporary hard water
Permanent hard water
Very soft water
Which classifications of water are alkaline?
(more than one answer)
Permanent hard water
Very soft water
Temporary hard water
Sort water
When temporary water is heated to 65°C or above it forms what?
Soft water
Limescale
Blue water
Fresh water
Hard water produces limescale when dried because its rich in what?
Salt
Calcium and magnesium
Sugar
Neutral water is what number on the pH scale?
3
1
9
7
Where is acidic on the pH scale?
Below 7
Above 7
Where is alkaline on the pH scale?
Below 7
Above 7
Ferrous oxide is also known as what?
Rust
Flux
Lead
What can be done to protect iron pipe from rust?
(more than one answer)
Paint the pipe with red oxide paint
Zinc galvanising
Use thicker pipe
Apply Denso tape
What can be used to protect the inside of iron pipe?
Fresh water
Inhibitor
Oil
Gas
What action can be used when soldering?
Lead action
Air action
Capillary action
Heat action
Heat required to keep water boiling is called what?
Sensible heat
Latent heat
The heat need to heat water to 100°C is called what?
Sensible heat
Latent Heat
What is used to remove hard water?
Water softener
Water hardener
Which three are scale inhibitors used to prevent limescale in hard water?
Lime
Magnetic
Immersion
Galvanic cell
Electrical
