Covalent Bonds

Covalent Bonds

Multiple Select

Which ones are Ionic?

• O2

• NaCl

• H2O

• CO2

• MgO

Multiple Select

Which ones are Covalent?

• O2

• NaCl

• H2O

• CO2

• MgO

Hydrogen

• The shells overlap, with a shared pair of electrons within

• Hydrogen only has 1 shell, so only needs a total of 2 electrons.

• Nothing more is needed.

Water

• Like before, the overlapped shells have shared pairs of electrons within.

• Hydrogen are filled with just 2 electrons.

• Oxygen needs its shells topping up to 8 in total, so there needs to be 4 electrons that are not in the overlaps.

Methane

• Although there are 4 bonds here, they are all hydrogen

• You only need to draw a pair of electrons in each overlap to complete.

Multiple Choice

What is the Charge of a Neutron?

• Positive Charge

• Negative Charge

• Neutral Charge

Multiple Choice

What is the Charge of a Proton?

• Positive Charge

• Negative Charge

• Neutral Charge

Multiple Choice

Ionic bonds are between...

• Metal and Non-metal
• Non-metal and Non-metal
• Metal and Metal

Multiple Choice

Atoms are most stable when their outer shell is complete.

• true
• false

Multiple Choice

A Nitrogen molecule (N2) has one triple bond. How many electrons do the nitrogen atoms share?

• 1
  1
• 3
• 4
• 6

Multiple Choice

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

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

Multiple Choice

What two types of atoms make a covalent bond?

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

Multiple Choice

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.