What happens to the substances in a chemical reaction?
the substances explode
the substances don't change
the substances react together
What are powders made of?
Powders are made of tiny pieces or grains that can flow past one another.
What is lava
solid
gas
liquid
What new substances form when we burn wood ?
A grey substance called ash and two different gases form
What are these particles showing
a liquid
Do solids keep their shape unless a force is exerted on them?
Yes, solids keep their shape unless a force is exerted on them.
What chemical reaction is this ?
The tin can is rusting.
Can we make some solids change shape?
Yes, we can make some solids change shape if we exert a force on them
What is carbon dioxide
liquid
gas
solid
What is ice
solid
gas
liquid
How are particles in a solid arranged?
Particles in a solid are packed closely together.
Which solids can we pour like liquids?
We can pour powders like sugar and sand. They act like liquidss.
What chemical reaction is this ?
It's burning wood .
Can we pour solids like we can pour liquids?
No, we can't pour most solids
What chemical reaction is this ?
Making cement from cement powder, sand, water and limestone
What is a chemical reaction?
When substances are mixed together and stay the same
When substances are mixed together and form a solid
When substances are mixed together and form a new substance
What chemical reaction has happened to this car .
The car is rusting
Where are particles ?
They are everywhere
What shape do liquids take?
Liquids take the shape of the container they are in.
We can change the state of materials by
heating or cooling them
give an example of some powders
sand, flour,sugar and salt
What are these particles showing?
a gas
What are these particles showing
a solid