WorksheetsTypes Chemical Reactions Quiz 25-26
Total questions: 28
Worksheet time: 14mins
The reaction AB + XY ⟶ AY + XB is an example of ______.
synthesis
decomposition
combustion
double replacement
The reaction A + XY ⟶ XA + Y is an example of ______.
synthesis
decomposition
combustion
single replacement
The reaction XA ⟶ X+A is an example of ______.
synthesis
decomposition
combustion
single replacement
The reaction X+A ⟶ XA is an example of ______.
synthesis
decomposition
combustion
single replacement
The reaction X + O₂ ⟶ H₂O + CO₂ is an example of ______.
synthesis
decomposition
combustion
single replacement
What type of reaction best describes the following equation? Zn + H₂S ⟶ ZnS + H₂
synthesis
decomposition
combustion
single replacement
Which type of reaction best describes the following equation? FeS + HCl ⟶ H₂S + FeCl₂
synthesis
decomposition
combustion
double displacement
What type of reaction best describes the following equation? Fe + O₂⟶ Fe₂O₃
synthesis
decomposition
combustion
double replacement
What type of reaction best describes the following equation? CH₄ + O₂ → CO₂ + H₂O
synthesis
decomposition
combustion
double replacement
What type of reaction best describes the following equation? H₂O₂ → O₂ + H₂O
synthesis
decomposition
combustion
double replacement
What type of reactions always burn oxygen and produce carbon dioxide and water as products?
synthesis
decomposition
combustion
double replacement
Identify the reactant(s) below: H₂O₂ → O₂ + H₂O
H₂O₂
O₂ + H₂O
--->
Identify the product(s) below: H₂O₂ → O₂ + H₂O
H₂O₂
O₂ + H₂O
--->
Identify the yield sign below: H₂O₂ → O₂ + H₂O
H₂O₂
O₂ + H₂O
--->
What is the best indication that a chemical reaction has occurred?
The water evaporates.
The water boils.
Bubbles indicate that carbon dioxide has formed.
The liquid remains unchanged.
A solid is formed during a chemical reaction between two liquids. This is an example of _______________.
precipitate
color change
evaporation
release of light
Light is released during a chemical reaction. This is an example of _______________.
precipitate
color change
evaporation
energy change
A description of a chemical reaction that includes products and reactants is called _______________.
precipitate
color change
evaporation
chemical equation
What is the definition of a chemical reaction?
Atoms are rearranged to form new substances.
Bonds are broken and atoms form new products.
Reactants produce completely new products with different properties.
All of the above
What is the name of the reaction that absorbs (takes in) energy from its surroundings?
exothermic
endothermic
both
none
What is the name of the reaction that releases energy to its surroundings?
exothermic
endothermic
both
none
A chemical reaction has occurred. The glass feels hot. What type of reaction is this an example of?
exothermic
endothermic
both
none
A chemical reaction has occurred. The glass feels cold. Is this an example of what type of reaction?
exothermic
endothermic
both
none
Which of the listed factors affects the reaction rate? Think about the Alka-Seltzer experiment.
surface area
color
state of matter
brightness
Which of the listed factors affects the reaction rate? Think about the Alka-Seltzer experiment.
temperature
color
state of matter
brightness
In our experiment with Alka-Seltzer, the cold water...
increased the rate of the reaction (faster)
decreased the rate of the reaction (slower)
the rate of the reaction remained the same
What does a catalyst do in a reaction?
increases the rate of the reaction by lowering the activation energy
slows down the reaction
makes the rate of the reaction remain the same
What happens to the amount of matter before and after a reaction according to the Law of Conservation of Mass (Matter)?
It loses mass after a chemical reaction
It gains mass after a chemical reaction
The mass before and after the chemical reaction remains the same
The mass before and after the chemical reaction is completely different
