(incomplete) CBI 2 Key Terminology

Question 1

Mole

Answer 1

• a quantity of a substance that contains the same number of things equal to Avogadro’s number (6.022 x 10²³)

Question 2

Avogadro’s Constant

Answer 2

• 6.022 x 10²³ mol^-1

Question 3

Molar mass

Answer 3

• the mass in grams of one mole of a substance
• units: g mol^-1

Question 4

Molarity

Answer 4

• the molar concentration of a solution in terms of the amount (in moles) per unit volume (in dm³)

Question 5

Bronsted-Lowry Acid

Question 6

pH

Answer 6

• -log₁₀[H⁺]

Question 7

pH buffer

Answer 7

• an aqueous solution that contains a conjugate pair that changes in pH very little when small quantities of acid or base are added

Question 8

Strong acid

Answer 8

• a substance that completely dissociates to form a hydrogen ion and a conjugate base ion when placed in an aqueous solution

Question 9

Weak acid

Answer 9

• a substance that only partially dissociates to form a hydrogen ion and a conjugate base ion when placed in an aqueous solution