Atoms, Elements, and the Periodic Table

Tiny, negatively charged particles with mass are called ___________.

What is matter?

Positively charged, central part of an atom is called a(n)___________.

The top number in the element's periodic table block is called_________.

Positively charged particles in a nucleus are called______________.

Mass number is the sum of _______ and ________.

Substance whose smallest unit is made up of atoms of more than one element

Two or more substances mixed together which don't make a new substance is called_____________.

Mixtures that are the same throughout are_____________.

Elements are matter made up of_________.