Revision_Unit Test 1

Which of the following is a property of liquids?

• Defined shape and defined volume

• Can be easily compressed

• No defined shape but defined volume

• Defined shape but no defined volume

A substance made up of two or more elements chemically combined is called what?

• Mixture

• Element

• Compound

• Solution

Which of the following is a property of solid substances?

• Can be easily compressed

• Has no definite shape

• Has a definite shape and a definite volume

• Has a definite volume but no definite shape

A group of atoms held together by chemical bonds is called what?

• Molecule

• Atom

• Element

• Compound

What characteristic is known about gases?

• Defined shape

• Can be compressed

• High density

• Cannot be compressed

________ A group of two or more atoms held together by chemical bonds.

• Mixture

• Compound

• Element

• Molecule

What is the process of heat absorption called?

• Exothermic

• Endothermic

• Isothermal

• Isobaric

Which of the following properties describes a physical change?

• Marshmallow burns over the flame.

• Ice melts from the roof.

• A cat eats a piece of fish.

• Burning wood.

The law of conservation of mass states that

• Matter cannot be created or destroyed.

• Mass increases when a chemical reaction occurs.

• The number of molecules before and after a chemical reaction cannot change.

• Mass is lost when a chemical reaction occurs.

How do liquid water, ice, and steam differ from each other?

• They are different states of matter.

• They are different compounds.

• They are made up of different types of molecules.

• They are made up of different types of atoms.