Solids
What type of matter keeps its own shape without needing a container?
solids
What type of matter takes the shape of the container it is in?
Liquid
What type of matter spreads out if it is not in a container?
gas
What happens to ice when it gets warmer?
It melts into liquid.
Name one example of a solid, one example of a liquid, and one example of a gas.
Solid: rock; Liquid: juice; Gas: air
Name two physical properties you could use to describe a solid's surface.
Any two: size, shape, texture, color, smell
If you pour water from a cup into a bowl, does the water change its shape or keep the same shape?
The water takes the shape of the container- changes shape
Give one everyday example of a gas.
Air, oxygen, carbon dioxide, steam, perfume
What happens to water when it gets colder enough to freeze?
It freezes into solid.
Which of these is a liquid: juice, rock, or air?
juice
Is ice a solid, liquid, or gas?
solid
Name one physical property you can observe about a liquid (not shape).
color, smell, size (volume), texture
How is the shape of a gas different from the shape of a solid?
A gas does not have a fixed shape; it spreads out. A solid has a definite shape.
Is melting ice a reversible or irreversible change?
Reversible
Is ice cream melting when you leave it in the sun reversible or irreversible?
reversible
Which physical property describes how something feels when you touch it?
Texture
True or false: Liquids spread out to fill all the space like a gas.
False
If you open a bottle of perfume, why can people across the room smell it?
Because gas particles spread out and move through the air carrying the smell
Is burning wood a reversible or irreversible change?
Irreversible
Sort these into solid, liquid, or gas: steam, table, milk, and rock. (List each word with its state.)
steam = gas, table = solid, milk = liquid, rock = solid
A block of wood keeps the same shape even when you move it to a different container. Which property does this show?
It keeps its shape
Give an example of a liquid and describe how it behaves when you pour it into a tall, thin container.
It will take the shape of a tall, thin container.
Describe one physical property you might NOT use to describe a gas (choose from size, shape, texture, color, smell).
Example: size (hard to describe for gas in same way) — explanation: gases don't have a definite size/shape like solids/liquids
Give one example of a reversible change (not ice) and one example of an irreversible change (not wood).
Example reversible: ice ↔ water, ice cream melting ↔ refreeze
Example irreversible: eggs cooked, wood burned — cannot return to original
Why would heating or cooling changes change an egg and is it reversible or irreversible?
Egg — heating/cooking an egg is irreversible because the proteins change and it can't go back to raw egg