Unit 1: Atoms and Periodic Table

Front

What part of the atom is responsible for the mass of the atom and is neutral in charge?

Back

Neutron

Front

What is the relationship between atomic number and the number of protons in an element?

Back

Atomic Number = # of Protons

Front

What is the formula for calculating the mass number of an atom?

Back

Mass Number = # of Protons + # of Neutrons

Front

What are the horizontal rows on the periodic table called?

Back

Periods

Front

What are the vertical columns on the periodic table called?

Back

Groups

Front

What is an element?

Back

A substance that cannot be broken down into simpler substances by chemical means.

Front

How many neutrons does Hydrogen have?

Back

0

Front

What is the charge of a proton?

Back

Positive

Front

What is the charge of an electron?

Back

Negative

Front

What is the atomic structure of an atom?

Back

An atom consists of protons, neutrons, and electrons.