Properties of Matter

Which of the following is a physical property of matter?

• Flammability

• Density

• Reactivity

• Combustibility

Fill in the blank: A chemical property of a substance can be observed when it undergoes a _______.

• Change in shape

• Chemical reaction

• Phase change

• Temperature change

What is a pure substance?

• Matter with a variable composition

• Matter with exactly the same composition

• Matter that changes composition

• Matter with no composition

Substances can be classified into two categories: _______ and compounds.

• Mixtures

• Elements

• Solutions

• Gases

What is an element?

• A substance that can be broken down into simpler substances

• A substance that cannot be broken down into simpler substances

• A mixture of different substances

• A compound of two or more elements.

Elements have fixed compositions because they only contain ______.

• multiple types of atoms

• one type of atom

• no atoms

• different molecules

Which element does the symbol 'C' represent?

• Carbon

• Calcium

• Copper

• Chlorine

The symbol 'Au' represents ______.

• Silver

• Gold

• Aluminum

• Argon

What is a compound?

• A substance made from one element

• A substance made from two or more simpler substances

• A mixture of gases

• A single element

Sodium chloride is an example of a compound because it contains the elements sodium and ____.

• Oxygen

• Hydrogen

• Chlorine

• Nitrogen