1. Particle Model
Made By: Raina

2. This is the 3 Particles of Matter
Solid particles vibrate to Liquid particles have Gas Particles move
and fro. some freedom and can freely and at high
move around each speed.
other.

3.  Solids: Strong forces hold the particles
together in a three-dimensional structure.
In many solids the particles form an orderly
arrangement called a lattice.
 Liquids: The forces that hold the particles
together are weaker than in solids. The
particles in a liquid can change position by
sliding over each other.
 Gases: The forces of attraction between the
particles are very small and the particles
can move away from each other and travel
in all directions.

4. Fun Facts about Mr.Liquid
Interviewer: Good Morning, Mr. Liquid. First of all I would like to
ask you, what is your properties?
Mr. Liquid: Good Morning too, and my properties are, when I am
heated I am generally expand much more than solids for a
given temperature rise.
Interviewer: I have heard some gossips that you have an
interesting fact.
Mr. Liquid: Yes, I have. When I am cooled, I will expand again
when my temperature drops below 4°C to 0°C .
Interviewer : What an Interesting Fact !Thank you for your
time, Mr. Liquid.

5. How Materials Change with Temperature?
• In Solid
The expansion of materials due to heating must be taken into
account whenever the materials are likely to encounter changes in
temperature. And remember Brass is easier to melt.
• In Liquid
When liquids are heated they generally expand much more than
solids for a given temperature rise. They also contraction of a liquid
can be demonstrated by setting up by setting up the apparatus.
• In Gas
Like most liquids and solids, gasses expand when they are heated
and contract when they are cooled.

6. Easy and Simple Questions, if you listen well in the presentation
 What are the 3 particles of matters?
 What is the interesting fact about liquid?
 How are
-Solids
-Liquids
-Gasses, change in temperature?
 Which one is easier to melt, Iron or
Brass?
 What is the title of this Chapter?
End of PowerPoint Question,
do not open your books please

7. Thank You For Your Attention
and answering my
questions, Friends and (a
Teacher) 