Science / Chemistry

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  • Created by: ella20188
  • Created on: 11-02-18 14:47
What is freezing?
liquid > solid
1 of 30
What is condensation?
gas > liquid
2 of 30
What is evaporation?
liquid > gas
3 of 30
What is sublimation?
solid > gas
4 of 30
What is melting?
solid > liquid
5 of 30
On a buncen, what is the suitable flame for heating things?
The blue flame
6 of 30
What is the bottom of the buncen called?
The base
7 of 30
Does gas have a fixed shape?
No
8 of 30
Does liquid have a fixed volume?
Yes
9 of 30
On a buncen, what is the yellow flame called?
The safety flame
10 of 30
On a buncen, what is the name of the pipe that connects to the gas plug?
Rubber pipe
11 of 30
On a buncen, what is the name of the part that covers the air hole?
The collar
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What is the long neck of the buncen called?
The chimney
13 of 30
On a buncen, what is the centre of the yellow flame called?
The cone
14 of 30
In a solid how are the particles moving?
They're vibrating
15 of 30
In a liquid how are the particles moving?
They're changing positions with frequent positions
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Does gas have fixed volume?
No
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Why can you not compress solids?
Because they're rigid objects and and they're very close together, and regularly arranged so there is no where for them to move
18 of 30
How can 25cm cubed of gas fit into a container with a volume of 0.25cm cubed?
Because gas can be compressed because is it doesn't have a fixed volume, and the particles are very far apart so there is space for them to move closer together
19 of 30
Why can liquid be easily poured?
Because they can change position to fit different forms (they have a fixed volume but not a fixed shape like a solid)
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What is pressure?
Pressure is caused by air particles colliding with a solid for example the wall of a container. The more air particles there are, the greater the pressure will be.
21 of 30
Can you give two ways to increase pressure?
Increase the amount of particles - more particles + more collisions = more pressure or Increase the heat - hotter particles = faster particles = more force they have = more pressure
22 of 30
Can you explain the vacume pump and the water bottle experiment?
The vacume pump sucks out the air particles inside the bottle, the less particles inside there is less pressure. With more pressure on the outside than inside the bottle collapses
23 of 30
What is the boiling point of water?
100 degrees celsius
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What is the formula for density?
The formula for density is...
25 of 30
What is the density of water?
1
26 of 30
What density does an object have to be to float on water?
The objects density has to be below the density of water (1) if you have tin foil boat on it's density was 0.89 it would float however if it's density was 1.01 it would sink
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What is this diagram showing?
A solid
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What is this diagram showing and what do the lines mean?
A gas, the lines show the particles are moving
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What is this diagram showing?
A liquid
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Other cards in this set

Card 2

Front

What is condensation?

Back

gas > liquid

Card 3

Front

What is evaporation?

Back

Preview of the front of card 3

Card 4

Front

What is sublimation?

Back

Preview of the front of card 4

Card 5

Front

What is melting?

Back

Preview of the front of card 5
View more cards

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