5.4 Properties of Water

Question 1

define cohesion

Answer 1

bonding between H2O molecules

Question 2

define adhesion

Answer 2

bonding between H2O and another molecule

Question 3

define solvent and solute, what’s the difference?

Answer 3

solvents are the base, and solutes are dissolved into solvents, creating solutions

Question 4

define specific heat

Answer 4

the amount of energy to heat 1 gram of a substance by 1 degree Celcius

Question 5

define heat of vaporization

Answer 5

the amount of energy for 1 gram of a substance to evaporate

Question 6

define concentration

Answer 6

solute / volume of solution

Question 7

define pH and pOH

Answer 7

pH is potential hydrogen, while pOH is potential hydroxide

Question 8

define hydroxide and hydronium, whats the chemical make up of each?

Answer 8

hydronium: H3O +
hydroxide: OH -

Question 9

what makes a solution neutral, acidic, or basic?

Answer 9

neutral: H3O = OH
acidic: H3O > OH
basic: H3O < OH

Question 10

fill in the blanks:
pH measures ______ on a _____________ scale

Answer 10

[H3O +]
logarithmic (powers of 10)

Question 11

how many times higher or lower [H3O+] in a pH of 4 than a pH of 10?

Answer 11

x 10 ^ 6

Question 12

how is the property of cohesion and adhesion used in real life?

Answer 12

plants move water and get nutrients

Question 13

how is the property of solvents used in real life?

Answer 13

in the digestive system to the bloodstream (transferred easily)

Question 14

true or false?
ice is less dense than liquid water.

Answer 14

true

Question 15

how is the property of heat of vaporization used in real life?

Answer 15

sweat (regulates body temperature)