Chemistry B Quiz 1

33 Questions | By Klt7560 | Updated: Mar 20, 2022 | Attempts: 215

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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.

Questions and Answers

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, C₃H_8 (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