BrainPop States of Matter and Matter Changing States

What is matter? Choose the best answer.

• Anything that is solid

• Anything that takes up space

• Anything that has a fixed volume

• Anything that can be seen

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In what way are liquids different from solids?

• Liquid molecules are lighter than solid molecules.

• Liquids are made of atoms; solids are made of molecules.

• Liquids don't have a fixed shape; solids do.

• Liquids are always denser than solids.

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What happens to the chemical structure of water when it changes state?

• Water molecules break apart to form individual atoms.

• Water molecules harden into ice molecules.

• Water molecules melt into gas molecules.

• Nothing happens to the chemical structure.

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What will happen if you keep increasing the temperature of a liquid?

• It will boil and become a gas

• It will transpire

• It will remain a liquid

• It will solidify

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What do lightning and stars have in common?

• Both have no electrical charge

• Both contain plasma

• Both have a fixed volume

• Both contain all three states of matter

Water's chemical formula is "H₂O." What does this mean?

• Water is composed of hydrogen molecules and oxygen molecules.

• A gram of water contains 20 hydrogen atoms.

• Each water molecule contains two hydrogen atoms and one oxygen atom.

• Water molecules cannot be split into smaller pieces.

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What is the basic shape of a liquid?

• A sphere

• The same shape as a gas, only rounder

• A cube

• Whatever shape its container is

8. How can you remove energy from matter?

• By increasing its volume

• By lowering its temperature

• By increasing its pressure

• By boiling it

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Gases have a tendency to expand. What's the best synonym for "expand?"

• Collide

• Spread out

• Shrink

• Boil

Where would you find a Bose-Einstein condensate?

• Inside stars

• At the North Pole

• In a science lab

• Bose-Einstein condensates exist only in theory