CHEM 120 WEEK 12 PRACTICE QUESTIONS AND ANSWERS| LATEST 2021:Chamberlain College of Nursing (100% SATISFACTIONS)

Chemistry Quizes

1. Question No. : (TCO 2) The mass number of an atom can be calculated from

Student Ans:
the number of neutrons.

the number of protons plus neutrons.

the number of electrons plus protons.

the number of electrons.

the number of protons.
Inst. Exp: Chapter 3; Mass number = number of protons + number of electrons

Points Received: 2 of 2
Comments:




2. Question No. : (TCO 2) Consider a neutral atom with 30 protons & 34 neutrons. The
mass number for this atom is

Student Ans:
32.

64.

34.

30.

62.
Inst. Exp: Chapter 3; Mass number = number of protons + number of neutrons = 30 + 34 = 64

Points Received: 2 of 2
Comments:




3. Question No. : (TCO 2) Heptane is always composed of 84% carbon & 16% hydrogen.
This illustrates the law of

Student Ans:
definite proportions.

conservation of mass.

multiple proportions.

, All of the above

None of the above
Inst. Exp: Chapter 2

Points Received: 2 of 2
Comments:




4. Question No. : (TCO 2) Which type of radioactivity has a negative charge?

Student Ans:
Alpha

Beta

Gamma

All of the above

None of the above
Inst. Exp: Chapter 3

Points Received: 2 of 2
Comments:




5. Question No. : (TCO 2) The mass of the electrons in an atom is generally regarded as

Student Ans:
significant.

insignificant.

comparable to the mass of the nucleus.

unknown.

None of the above
Inst. Exp: Chapter 3

Points Received: 0 of 2
Comments:




6. Question No. : (TCO 2) The number of protons in an atom is called the