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chem ch 2 flashcards

front 1

The nucleus of an
atom contains _____.

a. protons and neutrons.
b. protons and electrons.
c. electrons and neutrons.
d. protons, neutrons, and electrons.

back 1

a. protons and neutrons.

front 2

Two atoms with the
same atomic number but
different mass numbers
are called _____.

a. mutants.
b. isomers.
c. isotopes.
d. symbiots.

back 2

c. isotopes.

front 3

Select the incorrect statement
about the mass and volume of
an atom.

a. The mass is determined mostly by the protons
and neutrons.
b. The volume is mostly empty space.
c. The mass is concentrated in the nucleus.
d. The volume is determined by the arrangement
of the protons.

back 3

d. The volume is determined by the
arrangement of the protons.

front 4

For an atom of fluorine, the
atomic number is ___ and the
average atomic mass is ___.

a. 9; 18.988 amu
b. 18.998; 9 amu
c. 10; 19 g
d. 9; 9 g

back 4

a. 9; 18.988 amu

front 5

Atomic weights on the periodic
table are decimal numbers
instead of integers because ______.

a. the number of protons + neutrons determines atomic
weight.
b. of the existence of isotopes.
c. of the very small mass of electrons compared to
protons and neutrons.
d. the number of protons + electrons determines atomic
weight.

back 5

b. of the existence of isotopes.

front 6

The elements found on
the right side of the
periodic table tend to
______ electrons.
a. gain
b. lose
c. keep
d. share

back 6

a. gain

front 7

Metals and nonmetals
react to form
________ compounds.
a. molecular
b. mixed
c. empirical
d. ionic

back 7

d. ionic

front 8

Positive ions are called
a. positrons.
b. anions.
c. cations.
d. nucleons.

back 8

c. cations.

front 9

Compounds composed
only of carbon and
hydrogen are called
a. binary acids.
b. carbohydrates.
c. hydrocarbons.
d. alkanes.

back 9

c. hydrocarbons.

front 10

The elements located in
Group VIIA (Group 17)
on the periodic table are
called
a. alkali metals.
b. noble gases.
c. chalcogens.
d. halogens.

back 10

d. halogens.

front 11

Which of the formulas
below does not represent
a compound that actually
exists?
a. CaCO3
b. H2O2
c. KMnO4
d. Na2PO3

back 11

d. Na2PO3

front 12

Which name is
incorrectly paired with
the formula?
a. hydroxide ion; OH–
b. barium(II) chloride; BaCl2
c. ammonia; NH3
d. sulfur dioxide; SO2

back 12

b. barium(II) chloride; BaCl2

front 13

Acids produce _____
ions.
a. OH–1
b. OH+1
c. H+1
d. H–1

back 13

c. H+1

front 14

NaOCl is named ______.

a. sodium chlorate.
b. sodium chlorite.
c. sodium perchlorate.
d. sodium hypochlorite.

back 14

d. sodium hypochlorite.

front 15

LiNO3 is named
a. lithium nitrate.
b. lanthanum nitrate.
c. lanthanum nitrite.
d. lithium nitrite.

back 15

a. lithium nitrate.

front 16

The formula for
aluminum carbonate is
a. Al2(CO3)3.
b. AlCO3.
c. Al2C3.
d. Al3(CO3)2

back 16

a. Al2(CO3)3.

front 17

Fe2O3 is named
a. diiron trioxide.
b. iron(III) oxide.
c. ferrous oxide.
d. ironic oxide.

back 17

b. iron(III) oxide.

front 18

Which acid is not an
oxyacid?
a. hydrochloric acid
b. nitric acid
c. sulfurous acid
d. acetic acid

back 18

a. hydrochloric acid

front 19

HIO4 is named
a. iodic acid.
b. iodous acid.
c. periodic acid.
d. hydrogen iodate.

back 19

c. periodic acid.

front 20

Cl2O7 is named
a. chlorine(VII) oxide.
b. dichlorine hexaoxide.
c. dichlorine heptaoxide.
d. bichlorine heptaoxide.

back 20

c. dichlorine heptaoxide.

front 21

N2O5 is named
a. Nitrogen pentaoxide.
b. Dinitrogen pentaoxide.
c. Nitrogen oxide.
d. Dinitrogen oxide.

back 21

b. Dinitrogen pentaoxide.

front 22

How is CuNO3.2H2O5 is named?

back 22

• This is a hydrate and you name the ionic compound first followed by
the number of waters then the word hydrate
• So it is named: Copper(I)nitrate dihydrate