week 1 Flashcards Preview

NUR149 > week 1 > Flashcards

Flashcards in week 1 Deck (21):
0

11) An atom of one element is best distinguished from an atom of another element by the number of:

A) neutrons in the nucleus.
B) electrons in the nucleus.
C) protons in the nucleus.
D) electrons orbiting the nucleus.
E) electrons it can lose when bonding.

11) An atom of one element is best distinguished from an atom of another element by the number of:

A)
B)
C) protons in the nucleus.
D)
E)

1

12) Subatomic particles located around the nucleus of an atom are
A) protons.
B) electrons.
C) neutrons.
D) neutrinos.
E) photons.

12) Subatomic particles located around the nucleus of an atom are
A)
B) electrons. *
C)
D)
E)

2


13) A neutral atom contains
A) more protons than electrons.
B) more electrons than protons.
C) the same number of electrons and protons.
D) only neutrons.
E) none of the above.


13) A neutral atom contains
A)
B)
C) the same number of electrons and protons.
D)
E)

3

14) Electrons
A) comprise the majority of the mass of an atom.
B) are located in the nucleus of an atom.
C) have a positive charge of one.
D) are the subatomic particles most involved in bonding behavior of atoms.*
E) do not participate in the bonding of atoms.

14) Electrons
A)
B)
C)
D) are the subatomic particles most involved in bonding behavior of atoms.
E)

4

15) Which of the following best describes a proton?
A) one negative charge, no mass, found in orbitals
B) no charge, mass of one, found in nucleus
C) one positive charge, mass of one, found in nucleus
D) subatomic particle with no electric charge
E) none of the above

15) Which of the following best describes a proton?
A)
B)
C) one positive charge, mass of one, found in nucleus
D)
E)

5


16) The mass number of an atom is the
A) number of protons in the atom.
B) number of neutrons in the atom.
C) number of protons and electrons in the atom.
D) number of electrons and neutrons in the atom.
E) number of neutrons and protons in the atom.


16) The mass number of an atom is the
A)
B)
C)
D)
E) number of neutrons and protons in the atom.

6

17) An atom has an atomic number of 19 and a mass number of 39. This atom will have
A) 19 neutrons.
B) 20 neutrons.
C) 39 neutrons.
D) 58 neutrons.
E) 20 electrons.

17) An atom has an atomic number of 19 and a mass number of 39. This atom will have
A)
B) 20 neutrons.
C)
D)
E)

7

18) An atom of chlorine has 17 protons and 18 neutrons. Which of the following statements is true?
A) Chlorine atoms have 18 electrons.
B) Chlorine has a mass number of 35.
C) Chlorine has an atomic number of 18.
D) Chlorine has 35 electrons
E) Chlorine has an atomic number of 35.

18) An atom of chlorine has 17 protons and 18 neutrons. Which of the following statements is true?
A)
B) Chlorine has a mass number of 35.
C)
D)
E)

8

19) Energy
A) has mass.
B) is the capacity to do work.
C) has weight.
D) takes up space.
E) cannot be stored.

19) Energy
A)
B) is the capacity to do work.
C)
D)
E)

9

20) Chemical energy
A) moves matter.
B) results from the position or movement of objects.
C) is a form of potential energy within chemical bonds.
D) comes from the sun.
E) is not important in physiological processes.

20) Chemical energy
A)
C) is a form of potential energy within chemical bonds.
D)
E)

10

1) The simplest chemical units of matter are
A) atoms.
B) molecules.
C) protons.
D) neutrons.
E) electrons.

.

11

1) The simplest chemical units of matter are
A) atoms.
B) molecules.
C) protons.
D) neutrons.
E) electrons.

1) The simplest chemical units of matter are
A) atoms.
B)
C)
D)
E)

12

2) Which of the following is the largest in size?
A) an atom
B) a molecule
C) a proton
D) a neutron
E) an electron

2) Which of the following is the largest in size?
A)
B) a molecule
C)
D)
E)

13

3) The atomic number represents the number of
A) protons in an atom.
B) electrons in an ion.
C) neutrons in an atom.
D) protons and neutrons.
E) neutrons and electrons.

3) The atomic number represents the number of
A) protons in an atom.
B)
C)
D)
E)

14

4) All atoms with the same atomic number are grouped into
A) molecules.
B) cells.
C) compounds.
D) elements.
E) isotopes.

4) All atoms with the same atomic number are grouped into
A)
B)
C)
D) elements.
E)

15

5) The mass number of an atom indicates the number of
A) protons in the nucleus.
B) neutrons in the nucleus.
C) electrons in the outer shells.
D) protons and neutrons in the nucleus.
E) protons and electrons in an atom.

5) The mass number of an atom indicates the number of
A)
B)
C)
D) protons and neutrons in the nucleus.
E)

16

6) Elements that have atoms with full outer shells of electrons
A) will form many compounds.
B) will normally form anions.
C) will normally form cations.
D) frequently form hydrogen bonds.
E) are inert.

6) Elements that have atoms with full outer shells of electrons
A)
B)
C)
D)
E) are inert.

17

7) Isotopes of an element differ in the number of
A) protons in the nucleus.
B) electrons in the nucleus.
C) neutrons in the nucleus.
D) electron clouds.
E) electrons in energy shells.

7) Isotopes of an element differ in the number of
A)
B)
C) neutrons in the nucleus.
D)
E)

18

8) If an isotope of oxygen has 8 protons, 10 neutrons, and 8 electrons, its mass number is
A) 26.
B) 16.
C) 18.
D) 8.
E) 12.

8) If an isotope of oxygen has 8 protons, 10 neutrons, and 8 electrons, its mass number is
A)
B)
C) 18.
D)
E)

19

9) Electrons have a _____ charge; protons have a _____ charge; and neutrons have a _____ charge.
A) positive; negative; negative
B) negative; positive; positive
C) negative; positive; neutral
D) negative; neutral; positive
E) negative; neutral; neutral

9) Electrons have a _____ charge; protons have a _____ charge; and neutrons have a _____ charge.
A)
B)
C) negative; positive; neutral
D)
E)

20

10) The four elements making up about 96% of the body's mass are represented by the symbols:
A) O, Ca, H, Na
B) O, C, H, N
C) O, C, He, Na
D) O, H, K, N
E) O, Ca, H, Ni

10) The four elements making up about 96% of the body's mass are represented by the symbols:
A)
B) O, C, H, N
C)
D)
E)