Worksheetsrestest 1 unit 7
Total questions: 10
Worksheet time: 5mins
Strips of Metal Y are added to solutions of zinc nitrate, copper ሺIIሻ nitrate, and lead ሺIIሻ nitrate. According to the results of the experiments shown in the figure below, which must be true?
Cu is more active than Y
Zn is more active than Y
Pb is more active than Y
Y is the most active metal shown
Which of the following models of a chemical reaction BEST represents the law of conservation of mass?
Reaction I
Reaction II
Reaction III
Reaction IV
In any oxidation-reduction ሺredoxሻ reaction, the total number of electrons gained is…
unrelated to the total number of electrons lost
equal to the total number of electrons lost
. less than the total number of electrons lost
greater than the total number of electrons lost
Which of the following is a redox reaction?
2 AlPO4 + 3Mg --> 2Al + Mg3(PO4)2
2 HCl + Mg(OH)2 --> 2H20 + MgCl2
2 NaCl + H2SO4 → Na2SO4 + 2 HCl
HCl + NaOH → H2O + NaCl
. A clean strip of copper is dipped into a solution of magnesium sulfate. Which observation below is most likely to occur under ideal conditions based on the activity series of metals?
Bubbles of hydrogen gas appear on the copper
The copper strip becomes magnesium-plated
Copper dissolves and the solution turns blue
No reaction occurs therefore no changes are observed
Which of the following is a OXIDATION reaction?
A
F
D
E
What is an spectator ion?
Ions that are present in the chemical equation but not part of the chemical reaction
Ions that are present in both chemical equation and reaction
Non metals that make the reaction happen
Metals tha cause a reaction when combined with non metals
What is a precipitate?
A liquid that forms at the end of the reaction
A solid that is formed when two solids react
A solid that is formed when two aqueous solutions react
Helps speed up the reaction
Which of the following substances COULD NOT be a precipitate formed during a reaction between two aqueous solutions? (LOOK AT SOLUNILITY RULES)
Lead (II) Sulfate
Silver Bromide
Rubidium Hydroxide
Barium Phosphate
What does OIL RIG represent
Oxidazing is lot more. Reducing is games
Oxidation is Less. Reduction is Gain
Oxidation is Loosing protons. Reduction is gaining protons
Oxidation is Loosing electrons. Reduction is gaining electrons
