Exploring States of Matter

Bryson pours oil into a glass of water. The oil floats on top of the water. What does this tell you about the density of oil compared to water?

• Oil is denser than water.

• Oil is less dense than water.

• Oil and water have the same density.

• Oil has no density.

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TEKS.SCI.6.6D

Mia is observing an ice cube melting in a glass of water. Which of the following best describes the movement of molecules in the water compared to the ice cube?

• Molecules in the water move slower than in the ice cube.

• Molecules in the water move faster and slide past each other, while in the ice cube they vibrate in place.

• Molecules in the water are fixed in place.

• Molecules in the water do not move at all.

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TEKS.SCI.6.6A

Liam is observing water in three different states: ice (solid), liquid water, and steam (gas). Which of the following statements best compares the kinetic energy of water molecules in these three states?

• Atoms in solids have the most kinetic energy.

• Atoms in liquids have the least kinetic energy.

• Atoms in gases have the most kinetic energy.

• Atoms in solids and gases have the same kinetic energy.

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TEKS.SCI.6.6A

Match each object’s position in water to its density relative to water.

• same density as water

• 
• more dense than water

• 
• Less dense than water

• 

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TEKS.SCI.6.6D

Click on the picture that has the lowest kinetic energy?

Answer explanation

Molecules in a solid vibrate and move slowly compared to the molecules in a liquid or gas, so there is less kinetic energy

Tags

TEKS.SCI.6.6A

What state of matter is shown in the picture? Describe what you see that makes you think that?

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TEKS.SCI.6.6A

Match the vocabulary word with the correct definition.

• Liquid

• The state of

  matter that has a definite volume but no fixed shape (ex. water)

• Solid

• The different forms in which matter can be found

• States of Matter

• The state of matter that has no definite shape and take the shape of their container. (ex. water vapor)

• Gas

• Anything that has mass and takes up space. It cannot be created nor destroyed.

• Matter

• The state of matter that has a definite

  shape and volume. Their shape and volume cannot be easily changed. (ex. ice)

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TEKS.SCI.6.6A

Explain the difference between an atom and a molecule.

• One molecule is made of one atom.
• One molecule is always made of different particles.
• One molecule is made of more than one atom.
• One molecule is made of more than two atoms.

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TEKS.SCI.6.6A

Xavier is curious about what everything around him, like his desk, books, and even the air, is made of. What are all these things made of?

• dust

• atoms

• water

• molecules

• midichlorians

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TEKS.SCI.6.6A

Look at the picture and match the following:

• A

• Density 1.25g/ml

• C

• Density

  0.89 g/ml

• B

• Density

  1.05g/ml

Tags

NGSS.MS-PS1-2