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Elemental Chemistry Final Exam - Part 2
Test Description: Elemental Chemistry Final Exam - Part 2
Instructions: Answer all questions to get your test result.
1) What is Boyle’s Gas Law?
A
In a chemical reaction, the mass of the products is equal to the mass of the reactants.
B
At constant pressure, the volume of gas is directly proportional to the temperature.
C
At constant temperature, the volume of a gas is inversely proportional to the pressure.
D
If a change is made to a reaction in equilibrium, the reaction will adjust itself to counter the effects of that change
2) What is Charles’ Gas Law?
A
If a change is made to a reaction in equilibrium, the reaction will adjust itself to counter the effects of that change
B
At constant pressure, the volume of gas is directly proportional to the temperature.
C
In a chemical reaction, the mass of the products is equal to the mass of the reactants.
D
At constant temperature, the volume of a gas is inversely proportional to the pressure.
3) What is the Law of Conservation of Mass?
A
In a chemical reaction, the mass of the products is equal to the mass of the reactants.
B
At constant pressure, the volume of gas is directly proportional to the temperature.
C
If a change is made to a reaction in equilibrium, the reaction will adjust itself to counter the effects of that change
D
At constant temperature, the volume of a gas is inversely proportional to the pressure.
4) What does Le Chatelier’s Principle say?
A
At constant pressure, the volume of gas is directly proportional to the temperature.
B
In a chemical reaction, the mass of the products is equal to the mass of the reactants.
C
If a change is made to a reaction in equilibrium, the reaction will adjust itself to counter the effects of that change
D
At constant temperature, the volume of a gas is inversely proportional to the pressure.
5) What is Avogadro’s number?
A
6.02 x 10 to the 23rd power
B
1.602176634 × 10 to the 23rd power
C
9.109 x 10 to the 23rd power
D
3.1415 x 10 to the 23rd power
6) What is the Law of Constant Composition?
A
The pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases.
B
A pure compound always contains the same elements in the same proportions.
C
When the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be directly related.
D
None of the above
7) Redox reaction
A
A reaction that primarily involves the transfer of electrons between two substances.
B
A substance made up of one type of atom, which cannot be broken down by chemical reaction to form a simpler substance.
C
A chemical reaction in which a sugar is broken down by microbes into alcohol and carbon dioxide.
D
A substance which speeds up a chemical reaction without being changed by the reaction.
8) Kinetic Theory
A
The theory that states that as the temperature rises, particles move faster and therefore take up more space.
B
A substance made up of two or more different elements that are chemically joined in fixed proportions.
C
T. A catalyst used by living things to increase the speed of a natural chemical process.
9) Valency tells us how many bonds a particular atom wants to make.
A
False
B
True
10) Chemical bonding always involves the innermost electrons of an atom.
A
False
B
True
*select an answer for all questions
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