Chemical Bonding

How do atoms bond?

Multiple Choice

The ATOMIC NUMBER of an element tells us TWO things. It tells us the number of PROTONS and the number of ______.

• electrons

• neutrons

Multiple Choice

If you drew a Bohr model of an atom, and it had THREE electron shells (rings), what is the highest number of electrons you could draw on the 3rd shell (ring)?

• 2

• 8

• 4

Fill in the Blanks

Looking at the previous slide for the "Octet Rule", how many more electrons would a Carbon (C) atom like to gain?

Remember: Atoms want to be FULL and HAPPY with 8 electrons in their outermost shell.

Fill in the Blanks

Looking at the previous slide for the "Octet Rule", how many more electrons would a Nitrogen (N) atom like to gain?

Remember: Atoms want to be FULL and HAPPY with 8 electrons in their outermost shell.

Fill in the Blanks

Looking at the previous slide for the "Octet Rule", how many more electrons would a Oxygen (O) atom like to gain?

Remember: Atoms want to be FULL and HAPPY with 8 electrons in their outermost shell.

Multiple Choice

To become NEGATIVELY charged, an atom would need to _________ an electron.

• gain

• give away

Multiple Choice

To become POSITIVELY charged, at atom would need to __________ an electron

• gain

• give away

Multiple Choice

An ion has...

• no charge at all

• a positive or negative charge

Multiple Choice

An IONIC BOND always occurs between a METAL and ________.

• another metal

• a nonmetal

Multiple Choice

With COVALENT BONDS, electrons are not given away or gained (like with ionic bonds), they are __________ between the atoms.

• shared

• destroyed

Multiple Choice

A COVALENT BOND always occurs between a nonmetal and ______.

• a metal

• another nonmetal

Multiple Choice

A METALLIC BOND always occurs between a metal and ________.

• another metal

• a nonmetal

Multiple Choice

How many TOTAL ATOMS are in the compound NaCl ?

• 1

• 2

• 3

• 4

Multiple Choice

What type of bond does NaCl have?

• ionic bond

  (Na and Cl are both metals)

• ionic bond

  (Na is a metal and Cl is a nonmetal)

• covalent bond

  (Na and Cl are both nonmetals)

Multiple Choice

How many TOTAL atoms are in C₂H₆ ?

• 2

• 4

• 6

• 8

Multiple Choice

What type of bond does C₂H₆ have?

• ionic bond

  (C and H are both nonmetals)

• covalent bond

  (C and H are both nonmetals)

• ionic bond

  (C is a metal and H is a nonmetal)

Multiple Choice

How many TOTAL ATOMS are found in Na(CO₃)₂ ?

This one is tricky. You'll solve it in a way that is similar to the distributive property in math.

• 2

• 6

• 9

• 12