Font size
WorksheetsChemistry Final Review
Total questions: 65
Worksheet time: 39mins
These are different types of an element because of the number of neutrons.
Isotopes
Allotropes
Ions
Atomic Variants
This is the amount required to change the temperature of a substance by 1°C
Specific Heat Capacity
General Heat Capacity
Melting Point
Boiling Point
What is the specific heat capacity of water(in joules)?
(a)
1 Calorie ≠
1 kilocalorie
4184 joules
1 calorie
4.184 kilojoules
A reaction that absorbs heat is...
Exothermic
Endothermic
Chemical
Physical
A reaction that releases heat is...
Exothermic
Endothermic
Chemical
Physical
This is the flow of energy due to temperature difference.
Heat
Temperature
Joules
Specific Heat Capacity
This is a measurement of the random motion of the components of a substance.
Acceleration
Speed
Heat
Temperature
This law states that energy cannot be created or destroyed, but can be converted from one for to the other.
1st law of thermodynamics
Law of conservation of mass
Law of conservation of energy
Law of constant composition
Kinetic energy is displayed in...
The movement of atoms or molecules
The bonds of atoms or molecules
The attraction between electrons and protons
The electrons surrounding the nucleus
Potential energy is stored in...
Moving atoms or molecules
The nucleus
The top of a rollercoaster
The bonds between electrons/protons
What is energy?
The movement of atoms or molecules
Attraction between subatomic particles
The ability to do work or produce heat
The ability to produce electricity
If there is no excess reactant, it is a(n) ____
Unlimited Reaction
Exact Quantity
Stoichiometric Quantity
Perfect Reaction
What is the mole ratio in this equation?
2KI(aq) + MgCl₂(aq) => MgI₂(aq) + 2KCl(aq)
2 mol KI : 3 mol MgI₂
1 mol KI : 1 mol MgI₂
1 mol KI : 2 mol MgI₂
2 mol KI : 1 mol MgI₂
What percent of Chromium(III) Oxide is oxygen?
(Oxygen=16.00 u, Chromium=52.00 u)
31.58%
68.42%
9.30%
40.00%
What is the molar mass of CH₄?
(Hydrogen=1.008 u, Carbon=12.01 u)
11.002
16.042
13.018
12.016
To count by weighing, you must find the ____ of the items and treat them as if they were all ____.
Average Mass; Identical
Average Mass; Different
Median Mass; Identical
Median Mass; Different
The number of atoms in a mole is called...
Graham's Number
Atomic Number
Avocado Number
Avogadro's Number
How much is a mole?
6.022 x 10²²
6.22 x 10²³
6.022 x 10²³
6.022 x 10³³
Acid-Base reactions are indicated by...
Water as a product
Water as a reactant, an Acid and a Base as products
An Acid and a Base as reactants, water as a product
An Acid and a Base as reactants
Gas-forming reactions are indicated by...
At least one gaseous product
Aqueous reactants and at least one solid product
Liquid/solid reactants and at least one gaseous product
Aqueous reactants and at least one gaseous product
Decomposition reactions are indicated by...
Multiple reactants combining into one product
One reactant separating into multiple products
Transfer of electrons
The presence of O₂ as a reactant
Synthesis reactions are indicated by...
A diatomic molecule as a product
Both reactants being aqueous
One reactant separating into multiple products
Multiple reactants combining into one product
Combustion reactions are indicated by...
O₂ as a product
O₂ as a reactant
O₂ as a reactant and CO₂ as a product
CO₂ as a product
What are the subcategories of REDOX reactions?
Combustion, Decomposition, Synthesis
Decomposition, Synthesis
Evaporation, Precipitation, Accumulation, Condensation
Gas-Forming, Precipitation
REDOX Reactions are classified by...
Transfer of electrons
Formation of a precipitate
Formation of an oxygen anion
Formation of a gas
When forming an ionic bond...
Nonmetals lose electrons, metals gain electrons
Nonmetals gain electrons, metals lose electrons
Nonmetals gain protons, metals lose protons
Nonmetals lose protons, metals gain protons
What is a net ionic equation?
An equation that shows each aqueous reactant in its dissociated form(individual ions)
An equation with two ions
An equation that only displays the reactants that form a solid product
An equation that leaves out spectator ions
A complete ionic equation is...
An equation that displays all the reactants and products as independent ions
An equation showing all of its reactants and products as undissociated compounds
An equation that displays all the aqueous compounds as independent ions
An equation that is a complete waste of your time
In an oxidation-reduction reaction, gaining electrons is ___ and losing electrons is ___
Electron; Proton
Reduction; Oxidation
Oxidation; Reduction
Oil; Rig
Bases are characterized by a...
Hydroxide anion
Hydrogen cation
Hydroxide cation
Neutral hydrogen atom
This scientist stated that each compound will always have a definite ratio of atoms.
Joseph Proust
Svante Arrhenius
J.J. Thomson
Niels Bohr
Also known as Lord Kelvin, this scientist invented the Kelvin scale.
Joseph Proust
J.J. Thomson
William Thomson
Democritus
This scientist discovered the chemical nature of acids(Strong Electrolytes).
Ernest Rutherford
Niels Bohr
William Thomson
Svante Arrhenius
Water is always formed from reactions between...
Monatomic and Polyatomic Ions
Metals and Nonmetals
Cations and Anions
Acids and Bases
NaCl (aq) + KOH (aq) →
NaOH (aq) + KCl (aq)
NaOH (s) + KCl(s)
NaOH (s) + KCl(aq)
NaOH (aq) + KCl(s)
Why does the gas used for bunsen burners have an odor?
It contains methane
It contains sulfuric acid
It has sulfur-containing mercaptans
It contains gaseous carbon
Show the balanced chemical equation for the combustion of methane.
CH₄(l) + O₂(g) → CO₂(g) + H₂O(g)
CH₄(g) + O₂(g) → CO₂(g) + H₂O(g)
2CH₄(g) + 4O₂(g) → 2CO₂(g) + 4H₂O(g)
CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g)
What shows that a substance is dissolved in water?
(l)
(s)
(aq)
(g)
What is the name of the process in which ionic substances are broken down?
Electrolysis
Oxidation
Reduction
Composition
What is the systematic name for H₃PO₄?
(a)
What defines an acid?
Neutral hydrogen molecule
Hydrogen cation
Hydroxide anion
Ammonium cation
What is the systematic name for C₁₄H₉Cl₅?
(a)
What is the systematic name for Al(NO₃)₃?
(a)
What is the common name for NH₃?
(a)
What is the systematic name for C₂O₃?
(a)
What is the systematic name for NO₄?
(a)
What is the systematic name for KCl?
(a)
This scientist created the periodic table.
Dmitri Mendeleev
Nick the Camel
Ernest Rutherford
Svante Arrhenius
This scientist disproved the plum pudding model by shooting alpha particles through gold foil.
Niels Bohr
Dmitri Mendeleev
Ernest Rutherford
J.J. Thomson
This philosopher came up with the idea of Atomos, or what we know today as atoms.
Lao Tzu
Democritus
Pythagoras
Aristotle
This scientist is credited with the discovery of the electrons.
William Thomson
J.J. Thomson
Joseph Proust
Ernest Rutherford
This famous scientist ate clam for supper in Phoenix.
Nick the Camel
Dmitri Mendeleev
Ernest Rutherford
Jimmy Proton
Hydrogen peroxide is applied to heal a wound. What evidence is there of chemical change?
Color Change of the wound
The peroxide bubbling when in contact with blood
Hydrogen peroxide is a chemical
The wound freezes
In a chemical reaction, ____ can never be created or destroyed.
Solutions
Compounds
Atoms
Mixtures
When a penny is dropped into hydrochloric acid, the zinc disc inside can dissolve, leaving only the copper coating. What is the balanced chemical equation for this reaction?
2HCl(aq) + Zn(s) → ZnCl₂(aq) + H₂(g)
HCl(aq) + Zn(s) → ZnCl₂(aq) + H₂(g)
2HCl(aq) + Zn(s) → ZnCl₂(aq) + H₂(g) + Cu(s)
2HCl(aq) + Cu(s) → CuCl₂(aq) + H₂(g)
Balance the following equation:
ZnSO₄(aq) + NaF(aq) → ZnF₂(s) + Na₂SO₄(aq)
2ZnSO₄(aq) + NaF(aq) → ZnF₂(s) + Na₂SO₄(aq)
ZnSO₄(aq) + NaF(aq) → ZnF₂(s) + 2Na₂SO₄(aq)
ZnSO₄(aq) + 2NaF(aq) → ZnF₂(s) + Na₂SO₄(aq)
ZnSO₄(aq) + NaF(aq) → 2ZnF₂(s) + Na₂SO₄(aq)
Classify the following reaction:
K₂CrO₄(aq) + Ba(NO₃)₂(aq) → 2KNO₃(aq) + BaCrO₄(s)
Precipitation
REDOX
Gas-Forming
Acid-Base
Combustion
Classify the following reaction:
HCl(aq) + NaOH(aq) → H₂O(l) + NaCl(aq)
Precipitation
REDOX
Gas-Forming
Acid-Base
Synthesis
Classify the following reaction:
2HCl(aq) + Na2S(aq) → H2S(g) + 2NaCl(aq)
Precipitation
REDOX
Gas-Forming
Acid-Base
Decomposition
Classify the following reaction:
Mg(s) + O₂(g) → MgO₂(s)
Precipitation
REDOX
Combustion
Decomposition
Synthesis
Classify the following reaction:
2H₂O(l) → 2H₂(g) + O₂(g)
REDOX
Combustion
Synthesis
Decomposition
Gas-Forming
What is a strong electrolyte?
It always stays undissociated regardless of the environment
It dissociates fully in an aqueous solution.
It is a poor conductor of electricity.
It is an ingredient in Gatorade.
Select all the strong electrolytes:
HNO₃
HCL
HSO₄
H₂SO₄
HF
Which of these are weak electrolytes?
HF
HNO₃
HC₂H₃O₂
HCl
NH₃
