5.2 Chemical Bonding

Question 1

Fill in the blanks:
opposite charges _____ and alike charges ____.

Answer 1

attract, repel

Question 2

True or False?
During ionic bonding you need one nonmetal and one metal.

Answer 2

True.

Question 3

Where are metals located on the periodic table?

Answer 3

the left

Question 4

What atom has a stronger pull for electrons, Na or Cl?

Answer 4

chlorine has a stronger pull, it is a nonmetal on the right side of the periodic table

Question 5

Why do many ion pairs form ion crystals?

Answer 5

Each nonmetal atom needs one metal atom to react with, and they form bonded ions. But all opposites attract, so the bonded ions surrounding the pairs will then become attracted to each other.

Question 6

True or False?
In ionic compounds, the formula tells us the total number of ions.

Answer 6

False
the formula tells us the ratio of ions, not the total number

Question 7

How many valence electrons are there for an atom to be stable?

Answer 7

8 valence electrons

Question 8

What is a bond length?

Answer 8

the distance between atoms such that they are at a state of balance (repulsion vs. attraction)

Question 9

How is the energy involved in the formation of a covalent bond?

Answer 9

as atoms get closer, the potential energy decreases, because each atom is attracting the other atom’s electrons more and more strongly

Question 10

True of False?
Hydrogen is a metal.

Answer 10

Although hydrogen is placed on the left side of the periodic table, it is actually a nonmetal.