Bio 2010 - Microbiology » Summer 2021 » Chapter 2 Quiz (A)

Need help with your exam preparation?

Existing Quiz Clients Login here
Question #1
As the concentration of hydrogen ions increases, the pH goes:
A.   down and the solution becomes more acidic
B.   up and the solution becomes more basic
C.   up and the solution becomes more acidic
D.   down and the solution becomes more basic
Question #2
_________ are substances composed of two or more different atoms bonded together. chemically.
A.   Isotopes
B.   Compounds
C.   Elements
D.   Ions
Question #3
A chemical bond formed by the equal sharing of one or more pairs of electrons between outer shells of two atoms is called a(n):
A.   non-polar covalent bond
B.   polar covalent bond
C.   hydrogen bond
D.   ionic bond
Question #4
On the Periodic table of Elements, potassium’s (K) atomic number is 19. It also is in the first group and has four periods. Which of the following is the correct electron configuration for potassium?
A.   2, 12, 4, 1
B.   2, 4, 4, 8 ,1
C.   2, 8, 12, 1
D.   2, 8, 8, 1
Question #5
Which of the following types of bonds can be dissociated by water?
A.   polar covalent bonds
B.   nonpolar covalent bonds
C.   ionic bonds
D.   hydrogen bonds
Question #6
In most atoms the number of protons and electrons is
A.   the same.
B.   variable, depending upon the atomic mass of the element.
C.   different, with the number of protons being greater.
D.   different, with the number of electrons being greater.
Question #7
A pure substance that is composed of a unique atomic arrangement is called an:
A.   a compound
B.   an element
C.   a solid
D.   matter
Question #8
Which are the outermost electrons of an atom?
A.   Electric electrons
B.   Ionic electrons
C.   Valence electrons
D.   Covalent electrons
Question #9
Anything that occupies space and has mass is called:
A.   an element
B.   a compound
C.   a solid
D.   matter

Need help with your exam preparation?

Existing Quiz Clients Login here