Ionic Bonding

Why do atoms bond?

• so the number of protons equals the number of electrons

• to fill the outermost energy level to make the atom stable

• so an atom can become unstable

What will an atom do if it has only 1 or 2 valence electrons?

• Give up its electron

• Look for other atoms who want to give up an electron.

What will an atom do if it has almost full valence shell?

• Look for other atoms who want to give up an electron

• Give up its electron

An atom that has gained or lost electrons is called ...

• a winner

• an isotope

• a loser

• an ion

Ionic bonds form between...

• Metals & Metals

• Non- metals and Non-metals

• Metals & Non-metals

What is the total charge of an ionic compound?

• positive

• neutral

• negative

Magnesium bromide is an ionic compound with the chemical formula MgBr₂. What does the "2" tell you?

• There are 2 bromide ions for every magnesium ion

• Bromide has a 2- charge

• Bromide has a 2+ charge

• There are 2 magnesium ions to every bromide ion

Tags

NGSS.MS-PS1-1

In the chemical formula for an ionic compound, which item is written first?

• Positive ion (cation)

• Negative ion (anion)

• It is written in alphabetical order.

Calcium Chloride is an ionic compound, made up from 1 atom of (Ca) and 2 atoms of (Cl). Which is the correct formula for this compound?

• CaCl₃

• CaCl

• CaCl₂

• CaCl₄

Tags

NGSS.MS-PS1-1

How does an atom become a negatively charged ion?

• gaining electrons

• losing electrons