Kinetic Molecular Theory Homework Review

According to the Kinetic Molecular Theory a liquid's (SELECT ALL THAT APPLY)

• particles are held close together by intermolecular forces

• particles are in constant motion

• particles are vibrating in place and closely packed

• particles are not moving

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NGSS.MS-PS1-1

The properties of liquids include (SELECT ALL THAT APPLY)

• definite volume

• take the shape of the container

• can flow

• are relatively incompressible

• can diffuse and have surfacre tension

A meniscus forms from a liquid in a test tube due to

• capillary action

• surface tension

• evaporation

• diffusion

Why is water a polar molecule? (SELECT ALL THAT APPLY)

• becaus of the bent shape of a water molecule

• because of the large electronegativity difference betweeen oxygen and hydrogen.

• because of the linear shape of a water molecule

• due to hydrogen bonding

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NGSS.MS-PS1-1

What is responisble for water's unique properties such as high boiling point, high heat (enthalpy) of fusion and high heat (enthalpy) of vaporization?

• water's structure allows for hydrogen bonding

• ionic bonding

• it's ability to ionize

• it's linear shape

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NGSS.MS-PS3-4

Is more energy required melt or to boil the same amount of water?

• Boiling requires more energy

• melting requires more energy

• it takes the same amount of energy to melt water or to boil water

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Surface tension is the property of water in which...

• water molecules at the surface tend to stick together.

• water spills easily.

• water tends to be see-through.

• water tends to push up into a dome over a container before it finally spills.

Rain drops are spherical in shape because of

• low temperature
• Surface Tension
• Viscosity
• External forces

Water is "sticky" because...

• of cohesion.

• of adhesion.

• of the attraction between the positively charged hydrogen atoms and the negatively charged oxygen atom.

• of capillary action.

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NGSS.MS-PS1-1

What is the only natural substance on Earth found in the liquid, solid, and gas states?

• water
• oxygen
• hydrogen
• metal

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NGSS.MS-PS1-4