Test Questions & Answers Atoms The Foundations Of Life Ch.2

Chapter 2: Atoms: the foundations of life

Test Bank

Type: multiple response question

Title: Chapter 02 - Question 01

1) An atom’s nucleus contains which of the following particles? Select all that apply.

a. Ions

b. Protons

c. Electrons

d. Neutrons

Type: multiple choice question

Title: Chapter 02 - Question 02

2) Which of the following is the chemical symbol for sodium?

a. Si

b. S

c. Sn

d. Na

e. Sr

Type: multiple choice question

Title: Chapter 02 - Question 03

3) Which of the following is the chemical symbol for potassium?

a. Pb

b. P

c. Po

d. K

e. Pt

Type: multiple choice question

Title: Chapter 02 - Question 04

4) An oxygen ion carries what electrical charge?

a. -1

b. +1

c. +2

d. No charge

e. -2

Type: multiple choice question

Title: Chapter 02 - Question 05

5) Which of the following carries a negative charge?

a. Nucleus

b. Proton

c. Neutron

d. Electron

e. Atom

Type: multiple response question

Title: Chapter 02 - Question 06

6) Which of the following is not an element? Select all that apply.

a. Oxygen

b. Water

c. Nitrogen

d. Carbon dioxide

Type: matching question

Title: Chapter 02 - Question 07

7) Match the following particles to the electrical charges they carry.

Feedback: Look at section 2.2, page 21 if you need a reminder of the charges on these subatomic particles.

a. Proton = Positive

b. Electron = Negative

c. Neutron = Neutral

Type: multiple choice question

Title: Chapter 02 - Question 08

8) An element’s mass number tells us which of the following?

a. The number of protons in an atom of that element.

b. The number of protons + electrons in an atom of that element.

c. The number of electrons in an atom of that element.

d. The number of protons + neutrons in an atom of that element.

e. The number of neutrons in an atom of that element.

Type: multiple choice question

Title: Chapter 02 - Question 09

9) An atom of fluorine has an atomic number of 9 and a mass number of 19. Which of the following statements is correct?

a. An atom of fluorine has 9 protons, 9 electrons, and 10 neutrons.

b. An atom of fluorine has 9 protons, 9 electrons, and 9 neutrons.

c. An atom of fluorine has 9 protons, 10 electrons, and 9 neutrons.

d. An atom of fluorine has 10 protons, 9 electrons, and 9 neutrons.

e. An atom of fluorine has 9 protons, 9 electrons, and 19 neutrons.

Type: multiple response question

Title: Chapter 02 - Question 10

10) An element’s atomic number tells us which of the following? Select any that apply.

a. The number of protons in an atom of that element.

b. The number of neutrons in an atom of that element.

c. The number of electrons in an atom of that element.

Type: multiple choice question

Title: Chapter 02 - Question 11

11) Which of the following statement is correct?

a. An atom always has the same number of protons and neutrons.

b. An atom always has the same number of protons and electrons.

c. An atom always has the same number of electrons and neutrons.

d. An atom always has the same number of protons, neutrons and electrons.

Type: multiple choice question

Title: Chapter 02 - Question 12

12) Which of the following statements is correct?

a. The three isotopes of carbon contain the same number of protons and neutrons, but different numbers of electrons.

b. The three isotopes of carbon contain the same number of protons and electrons, but different numbers of neutrons.

c. The three isotopes of carbon contain the same number of electrons and neutrons, but different numbers of protons.

d. The three isotopes of carbon contain the same number of protons, neutrons, and electrons.

e. The three isotopes of carbon contain the same number of protons, but different numbers of electrons and neutrons.

Type: multiple choice question

Title: Chapter 02 - Question 13

13) The 3d sub-shell comprises how many orbitals?

a. One

b. Two

c. Three

d. Four

e. Five

Type: matching question

Title: Chapter 02 - Question 14

14) Rank the following sub-shells in order of energy, with 1 being the lowest-energy, and 4 being the highest-energy

Feedback: The shells increase in energy according to numerical value: 1, 2, 3 etc. The sub-shells increase in energy in the following order: s<p<d<f. So the 2s and 2p sub-shells are of a higher energy than the 1s sub-shell (shell 2 I higher-energy than shell 1); and the 2p sub-shell is of a higher energy than the 2s sub-shell (p is higher energy than s). See section 2.5 for more details.

a. 2s = 2

b. 3p = 4

c. 2p = 3

d. 1s = 1

Type: multiple choice question

Title: Chapter 02 - Question 15

15) Shell 2 can hold a maximum of how many electrons?

a. 2

b. 4

c. 6

d. 8

e. 10

Type: multiple response question

Title: Chapter 02 - Question 16

16) Noting that chlorine has an atomic number of 17, which of the following statements are false? Select any that apply.

If we look at this outer shell we notice that it requires one more electron to be filled (to become 3s² 3p⁶ ). When acquiring an additional electron in this way, chlorine becomes a chloride ion, carrying a charge of -1.

a. An atom of chlorine has 17 electrons.

b. Chlorine’s valence shell is shell 2.

c. The electronic configuration for chlorine is 1s² 2s² 2p⁶ 3s² 3p⁵

d. Chlorine must gain 1 electron to achieve a full valence shell.

e. The chloride ion carries a charge of +1

Type: multiple choice question

Title: Chapter 02 - Question 17

17) Nitrogen has an atomic number of 7. Which of the following correctly depicts the electronic configuration of an atom of nitrogen?

a.

b.

c.

d.

Type: matching question

Title: Chapter 02 - Question 18

18) Rank the following elements according to how readily they will form anions, with 1 = least readily, and 4 = most readily.

Feedback: As we move across the periodic table from left to right, ionization energies increase: it takes more energy to extract an electron to form a positively-charged ion (a cation). So, elements on the left of the periodic table form cations more readily than those on the right, which form negatively-charged anions more readily.

Page reference: section 2.3, page 25

a. Iron = 3

b. Zinc = 2

c. Calcium = 1

d. Bromine = 4