States of Matter
Which is a solid: ice, milk, or air?
solid
What is matter made of?
Tiny particles.
made from tiny particles
Matter
You mix sand and water. Is this a mixture?
Yes
What does it mean to measure something?
To find its size, amount, length, mass, volume, or another measurable property using a tool or unit.
Which is a liquid: juice, a pencil, or oxygen?
juice
True or False: Particles are too small to see with your eyes
True
a tiny piece of matter that is too small to see.
Particle
What does it mean to mix substances?
To combine substances together
Which tool could you use to measure the length of a pencil?
A ruler
Which is a gas: water vapor, a book, or a rock?
water vapor
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Particles are far apart
Gas
a scientist who studies matter and its properties
Chemist
True or False: When salt dissolves in water, the salt particles disappear.
False
A student says, "I think the powder dissolved." What could the student use as evidence?
They could observe that the powder is no longer visible and is spread throughout the liquid.
What do the particles in a solid look like?
they are packed closely together and stay in an organized arrangement.
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Particles are close together but can move around.
Liquid
What do you call two or more substances put together?
A mixture
You put sugar into water and stir. The sugar is no longer visible. Did it disappear?
No. The sugar particles are still in the water.
You mix water and sand together. What did you make?
a mixture
A student sees a model with particles spread far apart and moving freely. What state of matter does the model represent?
Gas
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Particles are very close together
Solid
To recognize or name something
Identity
A student says, "If I can't see the salt anymore, it must be gone." What evidence could you use to show the salt is still there?
The salt can be recovered from the water, such as by evaporating the water.
A student has a cup of water and wants to know how much water is in it. What should the student do?
measure the water