A measure of how much mass in a volume of matter is 

• atom 
• element
• density
• molecule

A chart that organizes elements by atomic number is the

• periodic table
• nucleus
• atom
• solution

The smallest particle of matter that still acts like that kind of matter is a(n)

• atom
• molecule
• density
• element

A tiny particle made up of two or more atoms joined together is a(n) 

• atom 
• molecule
• mixture
• solution

The center of the atom, where protons and neutrons are is the 

• molecule
• density
• nucleus
• solution

A combination of two or more substances that are evenly mixed is a 

• mixture
• nucleus
• element
• solution

A combination of two or more different substances is a 

• solution
• mixture
• molecule
• nucleus

Which is not an example of matter?

• oxygen
• heat
• soil
• lemonade

A pan of water boils until it evaporates.  What property would remain the same?

• mass
• state
• temperature
• volume

The atomic number tells you how many ________ there are in an atom.

• protons
• neutrons
• nucleus
• molecules