Types Of Chemical Reactions Quiz
Chemical Reactions Quiz: MCQ Exam!
12 Questions | Total Attempts: 12178
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What do you know well-nigh chemic reactions? A chemical reaction is a route that leads to the transformation of i group of chemical substances to some other. Chemical reactions exemplify changes that just involve electrons' positions in the developing and breaking of chemical bonds among atoms, with no alter to the nuclei. This quiz will requite you a positive reaction of happiness when y'all pass with flying colors.
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i.
Which one of the following represents a concrete change?
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A.
Fe rusting
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B.
Paper burning
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C.
H2o freezing
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D.
Dynamite exploding
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2.
.O {font-size:149%;} You can tell a chemical reaction because it always produces …
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A.
A different substance
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B.
Reactants
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C.
A change of land
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D.
Water
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3.
Slide 5 To balance a chemical equation, you should change only the…
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A.
Subscripts
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B.
Coefficients
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C.
Chemic formulas
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D.
Location of the arrow
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iv.
Slide half dozen .O {font-size:149%;} If iron combines with oxygen to make iron oxide, the reactants are…
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A.
Iron oxide
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B.
Iron and iron oxide
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C.
Fe and oxygen
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D.
Oxygen and atomic number 26 oxide
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v.
Slide 7 How many carbon atoms are in that location in C12H22O11?
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A.
half dozen
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B.
12
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C.
xviii
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D.
45
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6.
Slide 8 How many oxygen atoms are in the production of this equation: 2H2 + O2 --> 2H2O
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A.
2
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B.
four
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C.
8
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D.
12
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seven.
Slide 9 .O {font-size:149%;} Which ane of the following is a chemical equation?
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A.
Water ice + heat --> water
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B.
Iron + oxygen --> rust
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C.
CO2
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D.
C + O2 --> CO2
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8.
.O {font-size:149%;} Balance the following equation: Ag + O2 --> Ag2O
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A.
Put a 2 in front of Ag
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B.
Add together a subscript 2 to the end of Ag2O
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C.
Add a iv in front of Ag and a two in forepart of Ag2O
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D.
Add a 2 in front of Ag and a 1 in front end of Ag2O
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9.
.O {font-size:149%;} In a chemic equation, the arrow means what?
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A.
A reaction is happening.
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B.
The two sides are equal.
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C.
The products menstruation into reactants.
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D.
The equation is counterbalanced.
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ten.
.O {font-size:149%;} The reactants include 7 grams of C and 4 grams of O. What is the total corporeality of C and O in the products?
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A.
seven grams
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B.
4 grams
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C.
eleven grams
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D.
None
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eleven.
.O {font-size:149%;} Who starting time determined that the masses of the reactants and products must exist the same?
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A.
Pasteur
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B.
Archimedes
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C.
Galileo
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D.
Lavoisier
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12.
.O {font-size:149%;} If you try to balance an equation past changing subscripts y'all change…
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A.
The number of molecules of product
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B.
The identity of the compound
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C.
The atomic number
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D.
The mass of the reactants
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