Chapter 2 | Atoms, Elements, and Isotopes

Proton

Positively charged particle

Neutrons

Neutral charged particles

Electrons

Negatively charged particles

How do you find neutrons?

Take the mass number and subtract it from the atomic number (# of protons)

Mass # - Atomic #

Is the number for atomic number and protons the same?

Yes

How do you find electrons?

Take your proton count / atomic # and subtract it from the total charge

atomic # - charge

In a neutral atom are the number of protons always equal to the number of electrons?

Yes

What is a period on the periodic table

The rows (horizontal) along it

What is a group on the periodic table

The vertical columns alongside it

Cation

Positively Charged ion

Anion

Negatively Charged ion

What’s the suffix used for cations

-ine

What’s the suffix used for anions

-ide

How do you find the mass #?

Add the protons and electrons of an element together

The vertical row of the periodic table is known as

groups

the horizontal row on the periodic table is known as

periods