Chemical bonding

Question 1

What are Covalent Bonds?

Answer 1

• Strongest type of bond
• The atoms share pairs of e- to achieve stability
• Polar = unequal sharing of pairs of electrons / no net charge
• Non-polar - equal sharing of pairs of electrons / positive net charge

Question 2

What are Ionic bonds?

Answer 2

• 2nd strongest bond
• Electron transfer attraction of opp charges
• Two opp charged ions
• Positive ions known as cations
• Negative ions known as anions

Question 3

What’s unique about Hydrogen Bonds?

Answer 3

• Partial charges attract/lead to bonding between molecules
• Involves a hydrogen atom located between a pair of other atoms having a pair of other atoms having a high affinity for electrons
• Weak bond

Question 4

What are Hydrophilic interactions?

Answer 4

• Easily form a hydrogen bond with water
• Gets dissolved in water

Question 5

What is Hydrophobic interactions?

Answer 5

• Property of substance that repels water
• Lacks affinity for water

Question 6

What is an example of a Hydrogen Bond?

Answer 6

• DNA

Question 7

Why is calcium homeostasis important?

Answer 7

• Calcium is the main component of bony skeleton

Question 8

What does Hypercalcemia mean?

Answer 8

• Too much

Question 9

What does Hypocalcemia mean?

Answer 9

• Too little

Question 10

What is a glycosidic bond?

Answer 10

• A chemical bond that link ring-shaped sugar molecules to other molecules

Question 11

What is a peptide bond?

Answer 11

• A chemical bond linking two consecutive amino acid monomers

Question 12

How can you drink a Coke [PH 2.5] and not have it affect the pH of your bloodstream in a substantial way?

Answer 12

• There’s a buffer in your body that helps keep H+ constant since cola is H-10

Question 13

What is the medical term for Blood being too acidic?

Answer 13

• Medical term for blood being too acidic is Blood acidosis

Question 14

If a solution has a pH of 5, what is the H+ and OH- concentration within the solution?

Answer 14

• H+ concentration is 10^ -5 M
• OH- concentration is 10^-9 M

Question 15

What is difference between a polar bond and non-polar bond?

Answer 15

• Polar bond is a covalent bond between elements that have different electronegativity
• Nonpolar bond is covalent bonds between elements that have same electronegativity