Final Exam 3 Question Preview (ID: 19329)
Final.
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What is a precipitate?
a) Anything that helps a reaction
b) An insoluble solid formed during a double replacement reaction
c) A gas
d) Stuff you put in a solute
When an atom or molecule loses an electron this is called?
a) transition
b) reduction
c) losition
d) oxidation
Which of the following is not a type of energy?
a) acidic
b) potential
c) chemical
d) kinetic
What is chemical energy?
a) potential energy stored in chemical bonds
b) energy from fire and explosions
c) energy used when turning on a metal burner
d) energy used by a roller coaster going down hill
When is the helpful acronym we use for remembering this?
a) LEO-GER
b) GEO-LER
c) ORE-ELG
d) LEG-REO
When a substance gives away an electron, that substance is ___________________.
a) Oxidized
b) Precipitate
c) Initiated
d) Reduced
Which of the following is NOT a property of an acid?
a) do NOT conduct electricity
b) some react with active metals
c) have a sour taste
d) react with bases to produce salt and water
Water makes both a hydrogen ion and a hydroxide ion. It is _____.
a) An acid
b) A base
c) Neutral
d)
The concentration of a solution is its
a) molar mass
b) volume
c) molarity
d) molar volume
How many moles of CuSO4 ⋅ 5H2O are in 0.8 L of a 0.6 M solution?
a) 1.3 moles
b) 1.4 moles
c) 0.48 moles
d) 0.20 moles
Which of the following is NOT a property of a base?
a) have a sour taste
b) feel slippery
c) have a bitter taste
d) conduct electric current
Calculate the pH of a solution with an H3O+ of 7.5 x 10-9 M
a) 7.50
b) 8.12
c) 9.00
d) 5.88
When does a precipitation reaction occur?
a) When two metals swap non-metals
b) When you drop something into a substance
c) When you take a solute out of a solvent
d) When you lose a bunch of electrons
Concentration is defined as
a) How much solute is dissolved in a given amount of solution
b) How much solution is dissolved in a given amount of solute
c) A substance that dissolves in water to give a solution that conducts electric current
d) A substance that dissolves in water to give a solution that does not conduct an electric current
What exactly does a solubility curve show?
a) The amount of H2O needed to dissolve something
b) How much solute has dissolved at 30oC
c) How concentrated a solution is
d) The maximum amount of a substance that can be dissolved in 100g H20 at a given temperature
What is an example of Henry’s Law?
a) carbonated beverage (soda)
b) bottled water
c) filling up a tire
d) spray paint
Liquids and solids exhibit practically no change in solubility with changes in
a) volume
b) moles
c) pressure
d) temperature
What are the three types of solutions for a solubility curve?
a) unsaturated, saturated, supersaturated
b) not full, full, really full
c) unconcentrated, concentrated, superconcentrated
d) emulsions, colloidals, solutions
What is Henry’s Law?
a) The solubility of a gas in a liquid is directly proportional to the pressure of that gas above the surface of the solution.
b) When volume and temperature are constant, gas pressure increases as the number of molecules increases.
c) The inverse relationship between volume and the pressure of a gas.
d) The direct relationship between the pressure of a gas and its temperature in Kelvin
Which of the following is not a way energy is transferred?
a) concentration
b) conduction
c) convection
d) radiation
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