chem summ 2 terms

Question 1

equal to the number of protons in the
nucleus.

Answer 1

ATOMIC NUMBER

Question 2

equal to the sum of the number of protons
and neutrons for an atom

Answer 2

MASS NUMBER

Question 3

Atomic number =

Answer 3

number of protons = number of electrons in a neutral atom

Question 4

Mass number =

Answer 4

number of protons + number of neutrons

Question 5

share the same number
of protons but have different numbers of
neutrons.

Answer 5

Isotopes

Question 6

is used to describe
particular isotopes, when describing the
nuclear properties of an atom

Answer 6

nuclide

Question 7

for isotopes of different elements with
the same number of neutrons

Answer 7

Isotones

Question 8

for isotopes of different elements with
the same mass number

Answer 8

Isobars

Question 9

for isotopes identical in all respects
except for the total energy content of the nuclei

Answer 9

Isomers

Question 10

radioactive isotope will use or
recommend to diagnose the function of thyroid
gland.

Answer 10

Iodine-131

Question 11

makes use of the long-lived
isotope carbon-14 to determine how old objects.

Answer 11

Carbon dating

Question 12

give the lowest wholenumber ratio of atoms of each element in
a compound.

Answer 12

Empirical formulas

Question 13

give the exact
number of atoms of each element in a
compound.

Answer 13

Molecular formulas

Question 14

show the order in
which atoms are bonded.

Answer 14

Structural formulas

Question 15

also show the three-dimensional shape of atoms in a
compound.

Answer 15

Perspective drawings

Question 16

When atoms lose or gain electrons, they become

Answer 16

IONS

Question 17

are positive and are formed by elements on
the left side (metal) of the periodic chart.

Answer 17

Cations

Question 18

are negative and are formed by elements on
the right side (nonmetal) of the periodic chart.

Answer 18

Anions

Question 19

Naming Binary Compound containing a
metal and a nonmetal

Answer 19

Separate the formula of the cation from that
of the anion. Determine the charge of each
ion.
2. First write the name of the cation , followed
by the name of the anion with a space in
between.

Question 20

Naming Binary Compound containing two
nonmetals but not hydrogen

Answer 20

They are named using prefixes to state how
many atoms of an element are in one
compound molecule.
2. The name of the second element modified
to the root of its name followed by the
ending ide.

Question 21

anions usually have the ending “-ide“

Answer 21

hydro- + root of the anion + -ic acid

Question 22

anions usually have the ending “-ate

Answer 22

root of the anion + -ic acid

Question 23

anions usually have the ending “-ite

Answer 23

oot of the anion + -ous acid.

Question 24

Naming Salts

Answer 24

In naming the corresponding salts
the acid’s ending
-ic is changed to -ate

-ous to -ite.

The prefixes are
retained.

Non-oxygen containing salts
have names ending in ide.

Question 25

Naming Bases

Answer 25

Since they all
contain the OH− anion, names of bases end in
hydroxide.