Unit 5 Chemical Bonds

What are ionic bonds?

• valence electrons transferred between atoms
• Inner most electrons transferred between atoms

Why do ionic bonds form?

• so the number of protons equals the number of electrons
• to fill the outermost energy level
• so an atom can become unstable

An electron has what kind of charge?

• no charge
• positive 
• negative
• it depends

a proton has what charge?

• positive
• negative
• no charge
• it depends

When the number of electrons equals the number of protons the atom has what charge?

• sponge bob
• positive charge
• negative charge
• neutral charge

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

• a winner
• an isotope
• an ion
• a loser

In an electron dot diagram, two pairs of shared electrons represents a ...

• single bond
• double bond
• triple bond
• quadruple bond

The chemical bond formed when two atoms share electrons  is called a(an) IONIC bond. 

• True
• False

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal and 1 Metal
• 2 Metals
• 2 Noble Gases

How do covalent bonds form?

• Donating & receiving valence e- between atoms.
• Opposite slight charges attract each other between compounds.
• Scientists are still not sure how they form.
• Sharing valence e- between atoms.