Language Of Chemistry Worksheet With Answer Key Page 4
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2
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57.8
ACIDS
Acids are compounds that lower the pH of water when added.
+
They have H
ions in them. They are dissolved in water so
aqueous.
aqueous solution (aq): symbolizes when a compound is
+
dissolved in water like NaCl(aq) is salt water which is Na
and
-
Cl
ions in water, and HCl(aq) is HCl dissolved in water making
+
-
H
and Cl
ions
Memorize these 6 acids:
– HCl(aq)
hydrochloric acid
– HF(aq)
hydrofluoric acid
– H
SO
(aq) sulfuric acid
2
4
– H
PO
(aq) phosphoric acid
3
4
– HNO
(aq)
nitric acid
3
– H
CO
(aq) carbonic acid
2
3
Problems to Try. Answers at the end of these notes.
Ex. 1:
Circle all the examples below that are ionic compounds.
HCl
K
O
MgCl
PF
CuBr
CaSO
CH
O
2
2
5
2
4
2
Ex. 2:
Circle all the examples below that are molecular compounds.
HCl
K
O
MgCl
PF
CuBr
CaSO
CH
O
2
2
5
2
4
2
Example 3: What ions are the following atoms most likely to make?
calcium =
_________
potassium = _________
sulfur =
_________
aluminum = _________
nitrogen =
_________
chlorine = _________
silver = ____________
Zinc = ____________
Ex 4: What is the name for: CuCl
SrS, NiCrO
, Mg(NO
)
, Na
P, ZnCO
, KOH, Ca(CN)
2,
4
3
2
3
3
2
Ex 5: What is the formula for sodium carbonate, copper(II) bromide, strontium fluoride, iron(III)
nitride, silver sulfite, nickel(II) nitrate, cadmium phosphate, ammonium hydroxide, magnesium
sulfate?
Ex. 6: What is the name for CF
, CO, PO
, N
F
? What is the formula for diphosphorus
4
5
2
4
tetraiodide, tribromine octaoxide, tetraphosphorus decasulfide, carbonic acid?
(You really should do the worksheet problems; they are more complete than these here.)
CHM 130: Chapter 7 Answers
page 4 of 5
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