Activities Quiz
1.

Which of these is a population? (Activity 2A)

answer #1
answer #2
answer #3
answer #4
answer #5


2.

Which of these choices includes the others? (Activity 2A)

atom
organism
population
tissue
molecule


3.

Which of these is the most inclusive level of organization? (Activity 2A)

community
organism
ecosystem
organ
population


4.

All the species of bacteria inhabiting your gut make up a(n) _____. (Activity 2A)

ecosystem
population
organism
organ system
community


5.

The basic unit of life is the _____. (Activity 2A)

cell
atom
organism
population
molecule


6.

What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons? (Activity 2B)

18
12
0
6
-1


7.

Which of these refers to atoms with the same atomic number but different atomic masses? (Activity 2B)

These atoms are different elements.
These atoms have different numbers of electrons.
These atoms are isomers.
These atoms are isotopes.
These atoms have different numbers of protons.


8.

Fluorine's atomic number is 9 and its atomic mass is 19. How many neutrons does fluorine have? (Activity 2B)

81
9
19
28
10


9.

An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11. How many protons does boron have? (Activity 2B)

0
5
6
11
16


10.

The innermost electron shell of an atom can hold up to _____ electrons. (Activity 2C)

2
18
32
8
1


11.

Which of these relationships is true of an uncharged atom? (Activity 2C)

The atomic mass is equal to the number of electrons.
The number of protons is equal to the number of electrons.
The number of neutrons is equal to the number of protons.
The atomic mass is equal to the atomic number.
The number of electrons is equal to the number of neutrons.


12.

What determines the types of chemical reactions that an atom participates in? (Activity 2C)

its atomic mass
the number of electrons in the innermost electron shell
the number of electrons in the outermost electron shell
the number of protons it contains
its atomic number


13.

What type of bond is joining the two hydrogen atoms? (Activity 2E)

question #13

covalent
hydrogen
ionic
hydrophobic
hydrophilic


14.

A(n) _____ refers to two or more atoms held together by covalent bonds. (Activity 2E)

ion
isotope
community
shell
molecule


15.

This atom can form up to _____ single covalent bond(s). (Activity 2E)

question #15

0
1
2
3
4


16.

A(n) _____ bond joins these two oxygen atoms. (Activity 2E)

question #16

single covalent
ionic
quadruple covalent
hydrogen
double covalent


17.

Which of these figures correctly illustrates the nature of the bonding of H2O? (Activity 2F)

answer #1
answer #2
answer #3
answer #4
answer #5


18.

What type of bond joins the carbon atom to each of the hydrogen atoms? (Activity 2F)

question #18

hydrogen
single (nonpolar) covalent
ionic
polar covalent
double (nonpolar) covalent


19.

Atoms with the same number of protons but with different electrical charges _____. (Activity 2G)

have different atomic masses
have different numbers of neutrons
are different ions
have different atomic numbers
are different isotopes


20.

In salt, what is the nature of the bond between sodium and chlorine? (Activity 2G)

polar covalent
nonpolar covalent
hydrogen
hydrophobic
ionic


21.

Click on the diagram to start the animation. What is the result of the animated process? (Activity 2G)

a positively charged sodium ion and a negatively charged chlorine ion
a positively charged sodium ion and a positively charged chlorine ion
covalent bond formation
a negatively charged sodium ion and a positively charged chlorine ion
a negatively charged sodium ion and a negatively charged chlorine ion


22.

An ionic bond involves _____. (Activity 2G)

the sharing of a single pair of electrons
an attraction between ions of opposite charge
no atoms other than sodium and chlorine
the unequal sharing of an electron pair
water avoidance


23.

The brackets are indicating a(n) _____ bond. (Activity 2H)

answer #X

ionic
polar covalent
single (nonpolar) covalent
hydrophobic
hydrogen


24.

What name is given to the bond between water molecules? (Activity 2H)

hydrogen
hydrophobic
ionic
polar covalent
single (nonpolar) covalent



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publishing as Benjamin Cummings