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Solids, liquids and gases
Transcript of Solids, liquids and gases
Properties of solids
liquids and gases
Look at the samples you have been given. You can tip the container to see what happens but don’t take the top off.
look at all the objects in order
complete your table
Could this be true?
DIFFUSION OF SOLIDS
WHAT DID YOU FIND OUT?
Draw out the following table.
Liquid particles move from
an area where there is a
HIGH level to an area
where there is a low
LEVEL of the particles i.e.
WHY DO LIQUIDS DIFFUSE?
DIFFUSION OF LIQUIDS
When two liquids mix, they spread easily through each other.
This is also called Diffusion.
Diffusion also happens in liquids
If the particles themselves weren't moving, then the two liquids wouldn't be able to mix on their own. We would have to stir them.
If you open a bottle of perfume at arm's length you can soon smell it.
Perfume particles mingle with air particles and move through the air until they reach your nose. We call this diffusion.
How can one solid diffuse
No, because the particles are too close together.
DO SOLIDS DIFFUSE?
5. Write down how far the dye has spread at the start of the experiment and then after 2, 4 and 6 minutes.
6. Draw a picture of how the test-tube looks like at these times.
5. Carefully take out the dropper and start the stop-watch.
4. Slide the dropper to the bottom of the test-tube and gently add 3 drops of the dye solution.
2. Fill up a test-tube with 5mls of water and place it in a test-tube holder.
3. Put some dye into a pipette. Wipe the dropper with a paper towel.
In groups, role play the behavior of
particles in a solid, liquid and gas
to show why:
Solids and liquids do not compress
gases do compress
Role play particles in a liquid showing
how a purple dye spreads through the
how the particles of perfume
spread through the particles of
air in a room
In your books
Draw a diagram of your experiment
(ruler and pencil)
Explain what happened in your results
Did you get what you expected?
For the next activity
you will be using the
idea of properties
a property is a word that
eg: a property of a gold
is that it is YELLOW
Explain using particles...
why solids have a fixed shape
solids have a fixed volume
liquids have a fixed volume
liquids have a shape
that changes to
fit the container
gases have no fixed shape
gases take up the entire
space of the container
gases have a volume
I will describe how the particles in a
solid liquid and gas behave
In three boxes, draw circles to show the
particles in a Solid and liquid and gas
I will do an experiment to investigate diffusion
Go to the table where your teacher is
so you can watch how to do the experiment
what happens to dye in a liquid?
complete the first boxes from
copy the table
take bags outside and create a
Before you begin
Solids liquids and gases, ICE WATER STEAM,
How can they be so different and the same
write down and illustrate the two ideas. Zeno Vs Democritus
Give your opinion
which do you agree with