Atoms
The number of protons plus the number of neutrons.
What is mass number?
Elements are placed in vertical groups with other elements that have the same ......
What are chemical properties?
Two or more substances that combine physically but do not make a new substance.
What is a mixture?
The tiniest atoms are located here.
What is "The top of the Periodic Table"?
Anything that has mass and takes up space.
What is a matter?
__________ and ___________ are two examples of elements.
What are ..................................
The elements that make up a water molecule.
What is the hydrogen and oxygen?