The compound H3PO4 is named:
The atoms of Group B elements electrons when they form ions.
Lose
gain
cannot be determined
either gain or lose
The compound H3PO4 is named:
sulfuric acid.
phosphoric acid.
ethanoic acid.
nitric acid.
The correct name for the ion Fe2+ is:
iron(II).
ferrous.
both b and c.
ferric.
Among the following, which is a binary molecular compound?
CO2
MgS
NaCl
FeO
The names of all binary compounds, both ionic and molecular, end in the letters .
-ate
-ite
-ide
-ade
The sulfate ion is written in which of the following ways?
S2-
none of the above
SO32-
SO42-
The law of states that in all samples of the same chemical compound, the masses of the elements are always in the same proportions.
not listed
definite proportions
conservation of energy
indefinite proportions
What is the formula for aluminum oxide?
Al2O3
Al3O2
Al2O
AlO3
Nitrogen reacts with oxygen to form two compounds. Compound A contains 2.8 g of nitrogen for each 1.6 g of oxygen. Compound B contains 5.6 g of nitrogen for each 9.6 g of oxygen. What is the lowest whole-number mass ratio of nitrogen that combines with a given mass of oxygen?
2:1
3:1
1:6
4:7
Which of the following compound names is obviously INCORRECT?
potassium dichromate
carbon dioxide
dihydrogen oxide
mercury chloride
The nonmetals in Groups 5A, 6A, and 7A:
form ions with a numerical charge equal to their group number.
form positively charged ions.
form ions with charges of 3-, 2-, and 1-, respectively.
lose electrons when they form ions.
An atom or group of atoms with a positive charge is a(n) .
Element
monatomic
anion
cation
A ion consists of a single atom with a positive or negative charge.
binary
monatomic
triple
polyatomic
The atoms of Group 7A elements electrons when they form ions.
Lose
gain
share
cannot be determined
Which of the following acid-naming rules is INCORRECT?
all acid names end with "-ic"
acids formed from sulfate ions will end in "-ic"
acids formed from chloride ions will end in "-ic"
acids formed from sulfite ions will end in "-ous"
Which of the following is an anion?
O2-
H
Al3+
Mg2+
What is wrong with the name of the compound “iron chloride”?
There must be a Roman numeral indicating the charge of the cation
iron will not combine with chlorine
the compound should be called iron chlorate
nothing is wrong with the name of this compound
The ionic charge of an element in Group 6A is .
1+
2-
2+
1-
Which of the following is a nonmetal?
silver
copper
oxygen
iron
In a polyatomic ion, the -ate ending indicates one oxygen than the -ite ending.
lost
less
more
cannot be determined
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