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States of Matter
Science | States of Matter | Melting Metals | Lesson 4
Success Criteria
Aim
You will spot questions in a green box at certain points in this Lesson Presentation.
Key Questions
The assessment questions that appear will enable you to check your understanding against the lesson aim and success criteria.
Decide whether these statements about melting chocolate are true or false.
Remember It
False
White, milk and �dark chocolates all �have different �melting points.
True
True
White chocolate usually melts between 37°C and 43°C. Dark chocolate melts at 46°C.
The melting points for all types of chocolate will be the same.
White chocolate will melt faster than dark chocolate.
Melting is the process where a solid changes to a liquid.
particle
particle
melt
solid
temperature
freeze
states of matter
gas
liquid
Key Vocabulary
material
properties
melt
When a material melts, it changes from a solid into a liquid.
freeze
When a material freezes, it changes from a liquid into a solid.
temperature
Temperature is a measurement of how hot or cold something or somewhere is.
solid
Solids are materials that keep their shape unless a force is applied to them. They can be hard, soft or even squashy. Solids take up the same amount of space no matter what has happened to them.
liquid
Liquids take the shape of their container. They can change shape but do not change the amount of space they take up. They can flow or be poured.
gas
Gases can spread out to completely fill the container or room they are in. They do not have any fixed shape but they do have a mass.
states of matter
Materials can exist in any of three states: solids, liquids or gases. Some materials can change from one state to another and back again.
particle
A particle is a small piece of matter that cannot be seen with the naked eye.
melt
freeze
temperature
solid
liquid
gas
states of matter
Tier 1
everyday words
Tier 2
words that are important in different science topics
Tier 3
words that are specific to this science topic
melt, freeze, temperature, material
solid, liquid, gas, states of matter, properties
particle
Key Vocabulary
Metals
Metals are a type of material that can come in many different forms. �They have been used by humans in a wide variety of ways for thousands of years.
Most metals share similar properties with each other. �These properties make them extremely useful. �Some examples of metals include:
Read more about metals, their properties and uses in the eBook.
aluminium
iron
gold
Melting Metals
As with other materials, metals have a melting point.
Each type of metal has its own unique structure so there are variations in their melting points.
This is important for scientists. It can be a way to identify metals and it helps them to understand how different metals can be used.
Do you understand that different metals have different melting points?
As some metals require specialised equipment and high safety precautions to be melted, a research enquiry would be the most effective and appropriate way to find out about the varying melting points of different metals.
Our enquiry question today will be:
How do the melting points of metals vary?
You may wish to use books or digital �devices to carry out your research.
Melting Points of Metals Research
Can you use your research enquiry skills to find out the melting points of different metals?
Melting Points of Metals Research
Use your research and the Melting Points of Metals Activity Sheet to fill out the table showing the melting points of different metals.
Paperless
Level Up: Explore why there may be some variations in melting point figures.
Use research to find out the melting points of the metals in the table below. �Record your findings in the right-hand column.
Name of Metal | Melting Point (°C) |
mercury | |
steel | |
tin | |
lead | |
tungsten | |
nickel | |
aluminium | |
bronze | |
brass | |
copper | |
Can you use your research enquiry skills to find out the melting points of different metals?
Stainless �Steel
Steel
You may have noticed that some metals have a wide range of temperatures for their melting points:
Level Up
Steel is an alloy, which means that it is made up of a mixture of metals. �The melting point is determined by the way it is made.
1400°C–1530°C
1371°C–1540°C
Top Card Game
Use the Metals Top Card Game to compare the melting points of metals.
Can you make comparisons between the melting points of different metals?
Ordering Materials
Based on your findings from today’s lesson, can you place the metals in order from lowest melting point to highest?
lowest
highest
mercury
tin
aluminium
copper
tungsten
Ordering Materials
Can you now put all of the metals you researched in order from lowest melting point to highest?
It may help to number your results or write a new list in the correct order.
Now that you have ordered the metals by their melting points, can you answer our enquiry question?
How do the melting points of metals vary?
Ordering Materials
lowest
highest
mercury
tin
aluminium
copper
tungsten
Success Criteria
Aim