Properties of Matter

What is the best definition of physical properties?

• Physical properties can be observed without changing the identity of the substance.

• Physical properties describe how a substance changes into a completely different substance.

• Physical properties can only be observe with our physical touch.

• Physical properties are only observed when a new substance is formed.

What type of change is change of state of matter? Which is the BEST answer!!!!

• Change of state is a physical change because the substance does not change its chemical composition.

• Change of state is a chemical change because the substance does not change its chemical composition.

• Change of state is a physical change because the that's what Ms. O makes us say.

• Change of state is a chemical change because the substance changes its chemical composition.

Tags

NGSS.MS-PS1-4

When is water absorbing heat? Select 2 correct choices:)

• Water is absorbing heat when it is changing into a solid.

• Water is absorbing heat when it is turning into a gas.

• Water is absorbing heat when its temperature is decreasing.

• Water is absorbing heat when the temperature is increasing.

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NGSS.MS-PS1-4

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On a heating curve, why would there be times when the temperature shows little change even though the substance is still being heated?

• The substance must have been removed from the heat for the temperature to not increase.

• The molecules within the substance were not moving very fast during that time.

• The heat applied was used to overcome the forces holding the molecules together in that phase instead of increasing the temperature.

• The heat applied was used to break down the molecules of the substance.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is NOT true of a gas?

• Gas particles move quickly.

• Gas particles have lots of kinetic energy.

• Gas molecules move slower, the hotter they get.

• Gases have variable volume and shape.

Tags

NGSS.MS-PS1-4

What is NOT true of a solid?

• Solid particles are tightly packed together.

• Solid particles have lots of kinetic energy.

• Solid particles have the strongest intermolecular forces.

• Solids have constant volume and shape.

What is NOT true of a liquid?

• Liquid particles have the weakest intermolecular forces of all the states of matter.

• Liquids flow.

• The volume of liquids remains constant when the container is changed.

• Liquids change shape easily.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

In which of the following scenarios is a chemical change taking place?

• Quartz crystal fractures when struck.

• Sugar dissolves when poured into tea.

• Liquid water turns to a vapor at 100°C.

• Sodium metal reacts with water to form sodium hydroxide and hydrogen gas.

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Which process describes ONLY a physical change?

• Dead animal being decomposed by fungus.

• Plants using carbon dioxide to make glucose.

• Protein is made by plants.

• Salt water evaporates the water when heated.

Which letter represents the change of state from solid to liquid?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-4