thermal energy and states of matter

According to the kinetic theory, all matter is composed of ______.

• waves

• particles

• Solid material

• plasma

Which of the following best describes particles in a solid?

• Molecules slide past each other; sample takes shape of container.

• No attractive forces between particles.

• Fills whatever container it is in.

• Particles tightly packed together.

When the temperature of a substance is lowered, its particles _______.

• vibrate more quickly

• stop vibrating completely

• escape the attractive forces of the other particles

• vibrate more slowly

Tags

NGSS.MS-PS1-4

_______ is the energy an object has due to its motion.

• Kinetic energy

• Heat of vaporization

• Heat of fusion

• Diffusion

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The _______ of a substance is the temperature at which a solid begins to liquefy.

• heat of vaporization

• heat of fusion

• melting point

• boiling point

What represents the average kinetic energy of the particles that make up a substance.

• Temperature

• Thermal Energy

• Heating Curves

• Sublimation

Tags

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Which of the following would increase the kinetic energy of a particle?

• A faster speed

• A slower speed

• A greater mass

• A lighter mass

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The particle diagram is representing a gaseous substance. Which of the following does this highlight?

• All the particles in the substance have different masses

• All the particles in the substance travel at the same speed

• The particles in a substance travel at different speeds

• The particles in a substance travel in the same direction

Tags

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The particles in a solid substance...

• do not have any kinetic energy

• do not move

• move slowly and swap positions with other particles

• vibrate but stay in the same relative place

In which state of matter do particles vibrate in place?

• gas

• solid

• liquid