Unit Matter Review

What do any two samples of the element mercury (Hg) have in common?

• the same mass

• the same volume

• the same type of atoms

• the same number of electrons

Alyssa investigates properties of matter. The answer to which question would BEST determine whether a substance is an element or a compound?

• What is the radius of each particle of the substance?

• Does the substance contain more than one type of atom?

• Was a chemical reaction necessary to create the substance?

• What is the electrical charge of the particles of the substance?

Tags

NGSS.MS-PS1-1

The light and dark circles in the pictures below represent different types of atoms. Which picture BEST represents a pure compound?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Which can be broken down chemically into simpler substances?

• isotopes

• atoms

• compounds

• elements

Which substance is most likely classified as a colloid?

• soft drink

• oxygen gas

• water

• fog

The boiling point of nitrogen is –196°C. What states of matter are involved when nitrogen boils?

• solid to gas

• liquid to gas

• liquid to solid

• gas to liquid

Tags

NGSS.MS-PS1-4

When ice begins to melt at 0°C, water molecules

• begin to lose some of their atomic mass.

• break apart into individual water atoms.

• move more freely in relation to each other.

• release heat to the surrounding atmosphere.

Tags

NGSS.MS-PS1-4

A student is given a liquid compound in a beaker. Which of the following is the BEST way to describe this liquid compound?

• definite shape, indefinite volume

• indefinite shape, indefinite volume

• definite shape, definite volume

• indefinite shape, definite volume

• liquid to gas

• liquid to solid.

• solid to gas

• solid to liquid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Based on this information, which statement MOST likely represents the state of matter in each container?

• X contains a solid, Y contains a liquid, and Z contains a gas.

• X contains a solid, Y contains a gas, and Z contains a liquid.

• X contains a liquid, Y contains a solid, and Z contains a gas.

• X contains a liquid, Y contains a gas, and Z contains a solid.