Atoms
The nucleus
What is a row on the periodic table called?
A period
Is a proton positively or negatively charged?
Positive
What is a column called on the periodic table?
A group or family
Neutral
Who organized the periodic table?
Dmitri Mendeleev
What charge does an electron have?
Negative
The two numbers on a square of the periodic table are:
Atomic number and atomic mass
What is in the nucleus of an atom?
Protons and neutrons
True or false: The chemical symbol always starts with the same letter as the chemical name.
False