Year 4
What are melting points and boiling points?
In this lesson, we will learn about how scientists measure temperature, two major 'fixed points' of a substance (melting and boiling point) and how we can determine the state of matter of a substance at a particular temperature when given these fixed points.
Year 4
What are melting points and boiling points?
In this lesson, we will learn about how scientists measure temperature, two major 'fixed points' of a substance (melting and boiling point) and how we can determine the state of matter of a substance at a particular temperature when given these fixed points.
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Lesson details
Key learning points
- Describe what is meant by melting point and boiling point
- Describe how it is possible to measure the melting point and boiling point of a substance
- Suggest which state of matter a substance will be in given its temperature
Licence
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5 Questions
Q1.
Which change of state occurs when a solid becomes a liquid?
Boiling
Condensing
Freezing
Q2.
Which state changes occurs when a gas becomes a liquid?
Boiling
Freezing
Melting
Q3.
When a solid is cooled the particles...
slide past each other
stop moving
vibrate more
Q4.
When a liquid boils the particles...
move closer together
stop moving
vibrate in fixed positions
Q5.
When gases condense the particles...
move further apart
stop moving
vibrate in fixed positions
5 Questions
Q1.
Under standard conditions a substance will always melt at the same temperature. True or False?
False
Q2.
Particles in a liquid...
are far apart.
do not move.
vibrate on the spot.
Q3.
Particles in a solid...
are far apart.
can slide past each other.
do not move.
Q4.
If the temperature is below a substances melting point it is...
a gas.
a liquid.
Q5.
If the temperature is above a substances boiling point it is...
a liquid.
a solid.