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year 7 Science Homework Week 4
By Naomi Arthur
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Last updated over 4 years ago
12 questions
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Question 1
1.
What is the melting point of a material?
The temperature at which a liquid turns into a solid or a liquid turns into as solid
The temperature at which a gas turns into a liquid or a liquid turns into a gas
Question 2
2.
What is the boiling point of a material?
The temperature at which a liquid turns into a solid or a liquid turns into as solid
The temperature at which a gas turns into a liquid or a liquid turns into a gas
Question 3
3.
At what temperature does water boil?
100
90
70
102
Question 4
4.
What increases in size when a substance is heated?
The particles
The substance
Question 5
5.
What happens to the arrangement of particles when a liquid heats up?
Move around/roll over each other more
Move closer together
Zoom around
Question 6
6.
What happens to
particles
when a substance expands or contracts?
They get bigger
Stay the same size
Get Smaller
Question 7
7.
In what state do the particles have strong forces between them
solids
liquids
gases
Question 8
8.
In what state of matter do particles slide over each other?
solids
liquids
gases
Question 9
9.
in what state of matter do particles have large spaces between them?
solids
liquids
gases
Question 10
10.
What is "Brownian motion“?
The random movement of particles in a solid
The organised movement of particles in a fluid
The random movement of particles in a fluid
Question 11
11.
What are the advantages of using the particle model to represent how particles are arranged in solids, liquids and gases?
Allows you to see the forces between particles
Allows you to see the different sized particles
Allows you to predict the behaviour of a substance
Question 12
12.
What are the limitations of using the particle model to represent how particles are arranged in solids, liquids and gases? Choose 3
Does not allow you to see the forces between particles
Does not allow you to see the different sized particles
Allows you to predict the behaviour of a substance
Show particles as solid spheres, which they are not