Physical Science States of Matter and solubility

1. In order for a substance to change from the solid state to the liquid state what has to occur?

• the substance must undergo an exothermic change and release energy.

• the substance must undergo an endothermic change and absorb energy.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

The table above shows data from a laboratory experiment in which the temperature was measured for water in various states. If the temperature of the water is directly related to the energy of the particles?

• The particles in the ice have more energy than the particles in the water.

• The particles in the boiling water have more energy than the particles in the ice water.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

The image above shows the change in particle arrangement as a substance undergoes

• freezing of liquid water to solid ice

• condensation of water vapor onto a glass of iced tea

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NGSS.MS-PS1-4

The diagram above shows the heating of an unknown substance. Given the information on this diagram, what would be the freezing point of this substance?

• 70°C

• 140°C

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NGSS.MS-PS1-4

Which statement is correctly represented in the diagram?

• A given substance can either change its state or change its temperature, but not both at the same time.

• Temperature is always changing while a substance changes from one state to another.

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NGSS.MS-PS1-4

Which of the following describes what happens as the temperature of a gas in a balloon increases?

• The speed of the particles decreases.

• The volume of the gas increases and the speed of the particles increase.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

A student wishes to investigate the relationship between the temperature and volume of a gas. Which of the following scenarios would be most effective in determining this relationship?

• Measure the pressure of the air in a tire on a cold day, a warm day, and a hot day.

• Measure the volume of a balloon filled with room temperature air. Place the balloon in a freezer for an hour and then measure its volume again.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following investigations would have produced the data represented in the graph above?

• A scientist submerged a sealed plastic syringe filled with 50 cc of room temperature air into a beaker of boiling water and recorded the change in the volume of the gas for the first 5 minutes that it was heated.

• A scientist filled a sealed plastic syringe with 50 cc of air, then applied pressure to the stopper and recorded the change in the volume of gas

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NGSS.MS-PS1-4

NGSS.MS-PS3-1

Gases are more soluble in liquids when the pressure is ____________ and the temperature is _____________.

• low, high

• high, low

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NGSS.MS-PS3-4

A solution containing the solute CO₂, is saturated at 25°C. It is then slowly cooled to 20°C with no change to the appearance of the liquid. What term would be associated with this solution?

• supersaturated

• unsaturated

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NGSS.MS-PS1-4