Atoms and Chemical Bonds

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