Chemistry Unit Test Flashcards
The ions that combine to form Magnesium Phosphate are:
a) Mg+3 and P-3
b) Mg+2 and P-3
c)P+3 and Mg-2?
d) Mg+2 and PO4 -3
e) Mg+3 and PO3 -3
- The ions that combine to form Magnesium phosphate are:
d) Mg+2 and PO4 -3
Which of the following is an acid?
a) H2SO3 (s)
b) Mg(OH)2 (aq)
c)H2CO3(aq)
d) Al(OH)3
e) H2SO3(l)
c)H2CO3(aq)
When a metal is added to HCl(aq), what is produced?
(a) hydrogen gas
b) base
C)oxygen gas and an ionic compound
d) an oxyacid
e)oxygen gas and a base
(a) hydrogen gas
Which of the following elements do not form a diatomic molecule
a) chlorine
b) hydrogen
c)oxygen
d) sulfur
e) iodine
d) sulfur
Atoms of element A have 3 electrons in their outermost shell. Atoms of element B have 7
electrons in their outermost shell. The formula of the compound formed between A and B
is:
a) A7B3
b) A3B
c) AB3
d) A3B7
e) AB
a) AB3
how many oxygens in Al(NO3)3 + Na2co3 - Al2(CO3)3 + NaNO3?
a) 3
b)6
C)9
d)12
e)24
d)24
The following list contains properties of common acids and bases in water. Which of these
properties describe an acid:
- turns blue litmus paper red;
- leaves phenolphthalein clear;
- feels slippery and have a tangy taste;
- tastes sour;
- reacts with hydrochloric acid
a) 1 and 5 only
b) 1,2 and 4 only
c) 1,3 and 5 only
e) 2,3,4, and 5
b) 1,2 and 4 only
Which a the following compounds has a metal with a charge of +2?
a) KOH
b) K2O
c)PbO
d)Mg3P2
e)c and d are correct
e) c and d are correct
Which one of the following reactions would best fit a neutralization reaction?
a iron (II) oxide + hydrochloric acid
b) iron (Il) bromide + copper sulphate
c) burning of propane
d) hydrogen + oxygen
e) phosphoric acid + magnesium hydroxide
e) phosphoric acid + magnesium hydroxide
A solution of vinegar (acid) is found to have a pH of 3 and a glass of orange juice
is found to have a pH of 5. This means the vinegar is (——)times more acidic than the orange juice.
100
The type of chemical reaction that occurs when a compound breaks down is called a (——–) reaction.
decomposition reaction
Metal elements in group # (—-) always lose two electrons to become stable
ions
2
Consider the following chemical reaction for question (4):
NaOH (aq) + HNO; (aq) - H,O (1) + NaNO, (aq)
D. The chemical name of the product, which remains an aqueous solution, would
be (—-)
sodium Nitrate
Consider the following for 5.
I) 7p, 7 n°, 7 e-
II) 7p, 7 n°, 10 e-
III)10 p, 7 n°, 7 e-
IV) -7p, 7 n°, 4 e-
V) 4p*, 7 n°, 7 e-
E. (—–) represents the structure of a nitrogen ion.
II
Phosphorus tetrachloride
PCl4
Cu3N2
Copper (II) Nitride
Iron (II) Sulfide
FeS
H2S (aq)
Hydrosulfuric acid
Ammonium Carbonate
(NH4)2CO3
- Balance the following completed skeleton equations. (2 Marks T/I)
__Li+__H2SO4 = ___H2+ ___Li2SO4
2Li+H2SO4 = H2+ Li2SO4
Balance
___HCl(aq) +___Ca(OH)2 (aq)= ____ CaCl2(aq) +___H2O(l)
__2_HCl(aq) +___Ca(OH)2 (aq)= ____ CaCl2(aq) +_2__H2O(l)
___HCl(aq) +___Ca(OH)2 (aq)= ____ CaCl2(aq) +___H2O(l)
word equation
Hydrochloric acid + Calcium Hydroxide= Calcium Chloride + water
Lead (II) metal is placed into a solution of tin (IV) nitrate…..
Balanced Chemical Equation:
Type of Chemical Reaction:
Single
Displacement
Magnesium bromide reacts with a solution of copper (I) oxide..
Double Displacement
