PHYSICAL AND CHEMICAL PROPERTIES

Physical and Chemical Properties

Physical Properties

• Observing or measuring these things does NOT lead to a change in the IDENTITY of the substance

• Many of these are "abilities" of the substance, but measuring that ability does not change the substance

• Matter phase change is physical

Chemical Properties

• "abilities" of the substance to change chemically

• ability to change into a new substance

Multiple Select

Check all that apply: Which of the following are physical properties?

• weighs 5 kg

• highly flammable

• soft texture

• red

• reacts with water to form oxygen gas

Remember: Physical properties describe the characteristics of a substance without changing the identity of it. They can be measured or observed with the senses.

Multiple Select

Check all that apply: Which of the following are chemical properties?

• melts at room temperature

• burns in air

• breaks down to water and oxygen

• tastes sour

• forms a salt and water

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Remember: Chemical properties describe the ability to change chemically; how a substance reacts.

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Multiple Choice

Sodium reacts very easily with other elements.

• physical property

• chemical property

Multiple Choice

The density of water is 1.0 gram per cubic centimeter.

• physical property

• chemical property

Multiple Choice

Gold is nonflammable.

• physical property

• chemical property

Multiple Choice

Diamonds are a very hard substance.

• physical property

• chemical property