Unit 1 chemistry flash cards

What is a Cation

A positive ion

What is a Anion

A negative ion

What is an ion

Any atom or molecule with an unequal amount of protons and electrons (non-neutral). Ions have either a positive or negative charge.

What is an atom

microscopic particles that are basic units of matter made up of subatomic particles

What is the atomic number of an element

Number of protons in the nucleus

What is the mass number of an atom

The mass of an atom

What is a isotope

Two atoms that have the same number of protons and a different number of neutrons.

What is the nucleus

the center of an atom made up of protons and neutrons

What is a proton

A positive change

What is an electron

a negative charge

What is a neutron

A neutral charge

What is a electron cloud

Where all the electrons in an atom are

How does an anion form

It forms when a atom gains electrons

How does a cation form

It forms when an atom loses electrons and has less electrons than protons

What is the formula for the mass number

Number of protons + Number of neutrons

What defines an element

The atomic number

What dose chemistry allow people to do

allows us to understand the universe at an atomic and subatomic level.

What is the purpose of the atomic scale

Is to determine if a chemical reactions has happened