Chemical Reactions Warm Up 4

20 Questions | By John_Mitchell_WV | Last updated: Dec 7, 2017 | Total Attempts: 36

Welcome to the Science Electronic Learning Environment for Physical Science (9th grade) and introduction to chemistry. This warm up is looking into reaction rates of chemical reactions. Our key concepts (1) What does a reaction rate tell you? And (2) What factors cause reaction rates to change? Good Luck!

Questions and Answers

1.

How many Calories does the average (Musa acuminata) banana has _____ Calories.
- A.
  
  100
- B.
  
  50
- C.
  
  200
- D.
  
  500
- E.
  
  1 000
2.

A _____ _____ is the rate at which reactants change into products over time.
3.

Which one of the following chemical reactions has the fastest reaction rate?
- A.
  
  Explosion of TNT
- B.
  
  Methane gas combustion
- C.
  
  Tree leaves changing colors
- D.
  
  Decomposition of dead matter
4.

Reaction rates tell how fast a chemical reaction is going.
- A.
  
  True
- B.
  
  False
5.

Select the factors that affect reaction rates from the list below. (NOTE: this is a multiple answer question.)
- A.
  
  Temperature
- B.
  
  Surface area
- C.
  
  Concentration
- D.
  
  Stirring
- E.
  
  Color change
- F.
  
  Always exothermic reaction
- G.
  
  Always endothermic reaction
6.

A(n) _____ is a substance that affects the reaction rate without being used up in the reaction.
- A.
  
  Catalyst
- B.
  
  Reactants
- C.
  
  Products
- D.
  
  Indicator
- E.
  
  Hypothermic
7.

When you wash clothes in a washing machine, particles of detergent reaction with stain particles. What factor is affecting the chemical reaction?
- A.
  
  Temperature
- B.
  
  Surface Area
- C.
  
  Concentration
- D.
  
  Stirring
- E.
  
  Catalysts
8.

A catalyst makes a reaction go faster by:
- A.
  
  Lowering energy barrier to break bonds
- B.
  
  Lowering energy barrier to form bonds
- C.
  
  Increases energy barrier to break bond
- D.
  
  Converts exothermic to endothermic reactions
9.

Which factor affecting reaction rates is defined as "refers to the number of particles in a given volume."?
- A.
  
  Temperature
- B.
  
  Surface Area
- C.
  
  Concentration
- D.
  
  Stirring
- E.
  
  Catalysts
10.

Which factor affecting reaction rates is being described in the next statement. You store milk in a refrigerator to slow down the reactions which causes it to spoil.
- A.
  
  Temperature
- B.
  
  Surface Area
- C.
  
  Concentration
- D.
  
  Stirring
- E.
  
  Catalysts
11.

Which factor affecting reaction rates is determined by the coal preparation plant as seen in the image below?
- A.
  
  Temperature
- B.
  
  Surface Area
- C.
  
  Concentration
- D.
  
  Stirring
- E.
  
  Catalysts
12.

Which factor affecting reaction rates is determined by the grain elevator explosion as seen in the image below?
- A.
  
  Surface Area
- B.
  
  Temperature
- C.
  
  Concentration
- D.
  
  Stirring
- E.
  
  Catalysts
13.

_____ is a state in which the forward and reverse paths of a change take place at the same rate.
14.

When Sulfur dioxide and Oxygen are mixed in a closed container. The forward reaction produces _____.
- A.
  
  Sulfur Trioxide
- B.
  
  Sulfur Dixoide
- C.
  
  Sulfur Tetraxoide
- D.
  
  Dioxygen trixoide
15.

Ammonia is an important industrial chemical used to make.... (NOTE: Please notice this is a multiple answer question.)
- A.
  
  Fertilizers
- B.
  
  Cleaning agents
- C.
  
  Dyes
- D.
  
  Plastics
- E.
  
  Metallic cations
- F.
  
  Metallic anions
16.

Which factors affect chemical equilibrium? (Note: this is a multiple answer question.)
- A.
  
  Pressure
- B.
  
  Temperature
- C.
  
  Concentration
- D.
  
  Stirring
- E.
  
  Catalysts
17.

This French chemist introduced his principle of chemical equilibrium in 1884. What is his name?

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