Rate Of Reactions_ Endo & Exo_Acids And Bases
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This is a quiz created for 8th grade Physical Science students. This is the last bit of chemistry that is covered in our AL Course of Study before moving into our Physics sections. This covers rates of chemical reactions, endothermic and exothermic reactions and acids and bases.
- 1.What does a light stick and a nuclear reaction have in common?
- 2.Bonus #2If you have equal amounts of of HCl (hydrochloric acid) and NaOH (sodium hydroxide) with the same concentration and you mix them together, would the pH be 0-6 or 8-14 or 7? Explain your answer.
- 3.Breaking a solid reactant into smaller pieces will
- A.
Decrease the temperature of a solution.
- B.
Increase the rate of the chemical reaction.
- C.
Slows the chemical reaction rate.
- D.
None of the above.
- 4.
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What process is the following animation showing?- A.
Osmosis
- B.
Neutralization
- C.
Diffusion
- D.
Concentration
- 5.What is the movement of water from an area of low solute concentration to an area of high solute concentration?
- A.
Osmosis
- B.
Neutralization
- C.
Diffusion
- D.
Concentration
- 6.What is it called when acids and bases destroy each other's chemical properties?
- A.
Osmosis
- B.
Neutralization
- C.
Diffusion
- D.
Concentration
- 7.What is the name of the scale used to measure the acidity of a solution?
- A.
Metric scale
- B.
Acid scale
- C.
Hp scale
- D.
PH scale
- 8.What is the pressure that resists osmosis?
- A.
Hypotonic pressure
- B.
Osmotic pressure
- C.
Air pressure
- D.
Water pressure
- 9.Which kinds of reactions absorb energy?
- A.
Endothermic Reactions
- B.
Exothermic Reactions
- 10.In a chemical reaction, adding a catalyst will
- A.
Slow the reaction down.
- B.
Have very little affect.
- C.
Cause neutralization.
- D.
Speed the reaction up.
- 11.What kind of reaction releases energy?
- A.
Decomposition reaction
- B.
Single replacement reaction
- C.
Exothermic reaction
- D.
Endothermic reaction
- 12.If the reaction needs more energy than the reactants have, then the reaction will be
- A.
A chemiluminescent reaction.
- B.
An endothermic reaction.
- C.
An exothermic reaction.
- D.
None of the above answers.
- 13.The numbers on the pH scale usually go from zero to ___________.
- 14.If a solution has a pH above 7 then you know that the solution is a/an ____________.
- 15.A solution's ___________________________ depends on the number of particles that are present in a certain volume.
- 16.If a solution has a pH below 7 then you know that solution is a/an __________.
- 17.Which kind of reaction is photosynthesis?
- A.
Endothermic
- B.
Exothermic
- 18.What kind of reaction is a blow torch?
- A.
Endothermic
- B.
Exothermic
- 19.What kind of a reaction is a firefly's glow?
- A.
Endothermic
- B.
Exothermic
- 20.What kind of a reaction is ice cream melting?
- A.
Endothermic
- B.
Exothermic
- 21.What kind of reaction is sugar and sulfuric acid (H2SO4)?
- A.
Endothermic
- B.
Exothermic
- 22.Which of the following is not a characteristic of acids?
- A.
Turn litmus paper red
- B.
Feel slippery to the touch
- C.
Are found in many juices
- D.
React with most metals
- 23.Which of the following is not a characteristic of bases?
- A.
Turns litmus paper red
- B.
Feels slippery to the touch
- C.
Soap and bleach are examples
- D.
Do not react with metals
- 24.What is the pH of a neutral solution?
- A.
0
- B.
1
- C.
7
- D.
14
- 25.What happens to a catalyst in a chemical reaction?
- A.
It is used up.
- B.
It bonds with one of the reactants.
- C.
It is released as energy.
- D.
It is unchanged by the reaction.
- 26._______________ is needed to break bonds and _______________ is released when new bonds are formed. (same word for both blanks)
- 27.When the reactants have more energy than is needed what happens to this extra energy?
- A.
It is burned up
- B.
It is released.
- C.
It is absorbed
- D.
It disappears.
- 28.Bonus #1 Suppose you have 1L of and acid solution with a pH of 2. You add 1L of pure water. The pH will go _______.
- 29.Why does putting a light stick in the freezer make it last longer?
- A.
The particles speed up so the reaction is happening faster.
- B.
It absorbs the light when it is cold and releases it when it is warmed back up.
- C.
The particles slow down so the reaction is only barely still happening.
- D.
The particles stop moving entirely and the reaction also stops completely.
- 30.What are the 4 things that can affect the rate of a reaction?
- A.
Concentration, surface area, temperature & conductivity
- B.
Surface area, catalyst, temperature, and precipitation
- C.
Concentration, temperature, surface area, catalyst
- D.
Surface area, catalyst, temperature, preciptate
- 31.Is orange juice an acid, base or neutral solution?
- A.
Acid
- B.
Base
- C.
Neutral
- 32.Is soap an acid, base or neutral solution?
- A.
Acid
- B.
Base
- C.
Neutral
- 33.What is the pH of the weakest acid?
- A.
0
- B.
14
- C.
6
- D.
7
- E.
8
- 34.What would be a reasonable pH for a base that is not very strong and not very weak?
- A.
1
- B.
14
- C.
8
- D.
11
- E.
13
- 35.If a solution has a lot of H+ (Hydrogen ions), will it be an acid, base or neutral?
- A.
Acid
- B.
Base
- C.
Neutral
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