NGSS.MS-PS1-4

Is melting butter for popcorn a chemical or physical change?

• chemical
• physical

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NGSS.MS-PS1-4

The liquid in the thermometer rises when it is placed in the hot water because ___________. 

• it gains heat from the hot water and expands.
• loses heat from the hot water and contracts. 
• the surrounding air is too warm. 
• the liquid is boiling. 

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NGSS.MS-PS1-4

The flow of energy from an object at a higher temperature to an object at a lower temperature.

• heat
• temperature
• radiation
• conduction

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NGSS.MS-PS1-4

The first law of thermodynamics states that the change in the internal energy of a system is equal to the difference in energy transferred to or from the system as heat and

• mass
• work done
• force
• pressure

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NGSS.MS-PS1-4

How can matter change from a liquid to a gas?

• by freezing 
• by heat
• by wetting it

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NGSS.MS-PS1-4

When the wires in a hair dryer heat up, which of the following types of energy change takes place?

• electrical energy to potential energy

• electrical energy to light energy

• electrical energy to thermal energy

• electrical energy to sound energy

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NGSS.MS-PS1-4

Near the North Pole, water is colder, so it is _________ dense and __________.

• more; sinks

• less; sinks

• more; rises

• less; rises

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NGSS.MS-PS1-4

a phase change occurs when the kinetic energy decreases enough.....

• so that the attraction between molecules pulls them together

• a change will not occur

• to overcome the attraction between molecules

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NGSS.MS-PS1-4

True/False: When a substance is heated, the change in energy causes the bonds between particles to become stronger.

• FALSE

• TRUE

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NGSS.MS-PS1-4

Which solute is least soluble at 90 ⁰C?

• solid A

• solid B

• solid C

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NGSS.MS-PS1-4