NChem 1.02 IR Properties and Composition of Matter

What are the two main properties of matter?

• It is visible and colorful

• It takes up space and has mass

• It is weightless and transparent

• It is solid and liquid

How is mass defined in the context of matter?

• The color of an object

• The amount of material in an object

• The temperature of a substance

• The speed of an object

What is an element?

• A mixture of different substances

• A pure substance that cannot be broken down into simpler substances

• A compound made of two or more elements

• A liquid that changes state easily

What is the smallest unit of an element that maintains its chemical identity?

• Molecule

• Compound

• Atom

• Mixture

What is a compound?

• A single element

• A mixture of gases

• A substance made of two or more elements chemically bonded

• A liquid that evaporates quickly

What is an extensive property?

• A property that depends on the amount of matter present

• A property that does not depend on the amount of matter present

• A property that involves a change in the identity of a substance

• A property that cannot be measured

Which of the following is an example of an intensive property?

• Volume

• Mass

• Melting point

• Amount of energy

What is a physical change?

• A change that involves a change in the identity of a substance

• A change that does not involve a change in the identity of a substance

• A change that creates a new substance

• A change that cannot be reversed

How can a mixture of iron and aluminum shavings be separated?

• By using the boiling point

• By using the magnetic property of iron

• By using the melting point

• By using the density of aluminum

What is a change of state in matter?

• A change from one state of matter to another

• A change in the chemical composition of a substance

• A change in the color of a substance

• A change in the temperature of a substance