Pre-Test on Matter and Density

What is the smallest particle that makes up matter?

• Molecules

• Elements

• Atoms

• Compounds

Which property of matter measures the amount of matter in an object?

• Density

• Volume

• Mass

• Space

What is a molecule?

• A single type of atom

• A combination of two or more atoms joined chemically

• The space matter takes up

• A measurement of mass

How can the volume of a solid object be determined?

• Only by measuring its dimensions

• Only by water displacement

• By using a balance

• Either by water displacement or calculating from dimensions

What is density?

• The total mass of an object

• The volume an object occupies

• The comparison of mass in a given volume

• The number of atoms in a molecule

Which statement about density is correct?

• Density changes based on the amount of material

• Density remains constant regardless of amount

• Density can only be measured in liquids

• Density cannot be used to identify materials

What makes elements unique?

• They can be broken down into simpler substances

• They are made of different kinds of atoms

• They cannot be broken down into simpler substances

• They only exist in laboratories

Approximately how many naturally occurring elements exist?

• 50

• 70

• 90

• 110

Which statement about atoms of the same element is true?

• They are different from each other

• They are alike

• They change over time

• They cannot form molecules

What tool is used to measure the mass of an object?

• Microscope

• Balance

• Ruler

• Thermometer