Study Biology

Course

Anatomy & Physiology

Study Pack

Set 2 The Chemical Basis Of Life

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Question 1

(Multiple Choice)

Free
Atom X has an atomic number of 20 and has a mass number of 40. The number of protons in atom X is equal to

A) 10.
B) 20.
C) 30.
D) 40.
E) 60.

Answer

Question 2

(Multiple Choice)

Free
Subatomic particles located in the nucleus of an atom are called

A) protons.
B) neutrons.
C) electrons.
D) orbitals.
E) Both protons and neutrons are correct names.

Answer

Question 3

(Multiple Choice)

Free
If an iron atom (Fe) lost three electrons, what would be the charge of the resulting ion?

A) Fe-3
B) Fe+6
C) Fe+1
D) Fe+2
E) Fe+3

Answer