Green
There are ______ states of matter.
three
Is MELTED ICE a reversible change? Why
Yes, it is a reversible change as water can be frozen into ice again.
It means to put together.
What is ASSEMBLE?
It has shape and volume.
What is solid?
Ice _______ at room temperature.
melts
When water freezes it changes from ________ to _______.
from liquid to solid
It means to take something apart.
what is DISASSEMBLE?
When water changes into gas it is ____________.
Evaporation
What would you do if you wanted to make juice into ice popsicles?
Cool (freeze) it.
Which change is a reversible change:
cooked egg
baked pizza
melted crayon
melted crayon
What can be disassembled a baked cookie or Lego blocks?
Baked cookie.
It has volume but no shape.
What is liquid?
Maple syrup is in this state of matter.
What is LIQUID?
If you make a car, disassemble it and reassemble it again to make a space shuttle. How could the new object be different from the tower?
a) It could have a different shape.
b) It could have more blocks than the tower.
c) It could have fewer blocks than the tower.
a) It could have a different shape.
What can be made from rocks: a plant, a wall, or cardboard?
A wall
It doesn't have shape or volume.
What is gas?
Steam is in this state of matter.
What is gas?
Burned paper is not a reversible change. How can you find out?
It will not change into paper after it is cooled.
Give example of something that can be taken apart.
Example: A toy car.
When water vapor changes into water it is called ____________.
Condensation