Chemistry B Quiz 1
Use these quizzes to prepare for the final exam. You must complete all quizzes with a grade of A in order to take the End of Course Exam.
- 1.LAB / What volume of water must be added to 250ml of 7M HCl to produce 5M HCl? (Hint: M1V1 = M2V2)
- A.
100 ml
- B.
1000 ml
- C.
350 ml
- D.
250 ml
- 2.LAB / What volume of water must be added to 250ml of 7M HCl to produce 5M HCl? (Hint: M1V1 = M2V2)
- A.
100 ml
- B.
1000 ml
- C.
350 ml
- D.
250 ml
- 3.LAB / What volume of water must be added to 250ml of 7M HCl to produce 5M HCl? (Hint: M1V1 = M2V2)
- A.
100 ml
- B.
1000 ml
- C.
350 ml
- D.
250 ml
- 4.What is the atomic mass of the element cadmium (Cd)?
- A.
112
- B.
64
- C.
48
- D.
96
- 5.How many electrons does an atom of the element mercury (Hg) have?
- A.
12
- B.
121
- C.
80
- D.
201
- 6.What coefficient is needed in front of NH3 in order for the following equation to be balanced? N2 + H2 → NH3
- A.
2
- B.
3
- C.
4
- D.
5
- 7.Propane, C3H8 (g), burns in oxygen to form carbon dioxide and water. Which equation correctly shows this reaction? a. C3H8 + O2 → CO2 + H2O b. C3H8 + 5O2 → 3CO2 + 4H2O c. C3H8 + 5O2 → CO2 + 4H2O d. 2C3H8 + 5O2 → 3CO2 + 4H2O
- A.
A
- B.
B
- C.
C
- D.
D
- 8.In which situation is a chemical reaction occurring?
- A.
Salt dissolving in water
- B.
A nail rusting
- C.
Ice melting
- D.
a glass window breaking
- 9.Given the unbalanced equation ___Fe2O3 + ___CO → ___Fe + ___CO2 When the equation is correctly balanced, using the smallest whole-number coefficients, what is the coefficient of CO2? a. 1 b. 2 c. 3 d. 4
- A.
1
- B.
2
- C.
3
- D.
4
- 10.Fossil fuels that contain carbon, such as coal, petroleum and natural gas, combine with oxygen to produce carbon dioxide gas and energy often in the form of heat. These processes are example of which type of reactions?
- A.
Endothermic reactions
- B.
Exothermic reaction
- C.
Metabolic reactions
- D.
Replacement reactions
- 11.What can a polar molecule dissolve?
- A.
Any solute
- B.
A nonpolar solute
- C.
A polar solute
- D.
No solute
- 12.If a water solution conducts electricity, what must the solute be?
- A.
Solid
- B.
Liquid
- C.
Electrolyte
- D.
Nonelectrolyte
- 13.All of the following speed up the dissolving process except _______.
- A.
Stirring the solution
- B.
Increasing the size of the solid to be dissolved
- C.
Increasing the temperature of the solvent
- D.
Crushing the solid to be dissolve
- 14.Which is NOT an element?
- A.
He
- B.
N
- C.
NaCl
- D.
Mg
- 15.What is the mass of an atom with 8 protons, 7 neutrons, and 8 electrons?
- A.
15 amu
- B.
7 amu
- C.
8 amu
- D.
23 amu
- 16.Which of the following has six valence electrons?
- A.
Beryllium
- B.
Carbon
- C.
Oxygen
- D.
Neon
- 17.In the electron cloud model of an atom, what accounts for most of the volume?
- A.
Electrons
- B.
Empty space
- C.
Neutrons
- D.
Protons
- 18.When iron is exposed to air and moisture, it corrodes or rusts. Examine the equation below for the formation of hydrated iron (III) oxide: __Fe + __O2 + __H2O → __Fe2O3+ 3H2O How many molecules of water are contained in the product?
- A.
2
- B.
3
- C.
6
- D.
1
- 19.In which situation is a chemical reaction occurring?
- A.
Salt dissolving in water
- B.
A nail rusting
- C.
Ice melting
- D.
A glass window breaking
- 20.H2SO4 + KOH → K2SO4 + H2O Cu + 2AgNO3 → Cu(NO3)2 + 2Ag NiCl2 + NaOH → Ni(OH)2 + 2NaCl\ H2 + O2 → 2H2O All of the equations above show what?
- A.
Reactants combining with products to produce a new substance
- B.
No chemical changes occurring
- C.
Physical changes taking place
- D.
Reactants combining to produce new substances
- 21.Propane, C3H8(g), burns in oxygen to form carbon dioxide and water. Which equation correctly shows this reaction? a. C3H8 + O2 → CO2 + H2O b. C3H8 + 5O2 → 3CO2 + 4H2O c. C3H8 + 5O2 → CO2 + 4H2O d. 2C3H8 + 5O2 → 3CO2 + 4H2O
- A.
A
- B.
B
- C.
C
- D.
D
- 22.What coefficient is needed in front of NH3 in order for the following equation to be balanced? N2 + H2 → NH3
- A.
2
- B.
3
- C.
4
- D.
6
- 23.What is the name of the OH- ion?
- A.
Anhydride
- B.
Oxide
- C.
None of the above
- 24.Fossil fuels that contain carbon, such as coal, petroleum and natural gas, combine with oxygen to produce carbon dioxide gas and energy often in the form of heat. These processes are example of which type of reactions?
- A.
Endothermic reactions
- B.
Exothermic reaction
- C.
Metabolic reactions
- D.
Replacement reactions
- 25.The _______ is the complete arrangement of electrons in an atom and determines how the atom will chemically bond and influences the orientation of its orbital in space, and its spin.
- A.
Electron configuration
- B.
Orbital science
- C.
Chemical properties of an atom
Questions: 10 | Attempts: 48933 | Last updated: Aug 26, 2021
-
Sample QuestionWhat is the name of this chemical? NH4+
Questions: 10 | Attempts: 40027 | Last updated: Jun 23, 2020
-
Sample QuestionAll matter consists of particles called________________.
Questions: 13 | Attempts: 31572 | Last updated: Aug 27, 2021
-
Sample QuestionThe substances that enter a chemical reaction are called __________.
Back to top