🩷 Unit 2: Chemical Bonds

Question 1

Chemical Bonds

Answer 1

electrons are shared, borrowed or donated to fill outer energy level

Question 2

Ionic Bonds

Answer 2

when an atom gives an electron to another atom
- not stable
- dissociate in water = electrolyte

Question 3

Electron Donor

Answer 3

gives up electron (ex: Na+)

Question 4

Electron Acceptor

Answer 4

receives an electron (ex: Cl-)

Question 5

Ions

Answer 5

atoms that carry an electrical charge

Question 6

Cation

Answer 6

positive ion (Na+)

Question 7

Anion

Answer 7

negative charge (Cl-)

Question 8

Covalent Bonds

Answer 8

atoms share electrons
- no ions formed
- strong
- don’t dissociate in water

Question 9

Hydrogen Bonds

Answer 9

weak attractive force between hydrogen, fluorine, oxygen, nitrogen atoms

Question 10

Properties of Hydrogen Bonds

Answer 10

• not strong enough to form molecule
• common in water
• creates surface tension
• shapes DNA and proteins