Project #1457 - chemistry worksheet

1. A study of reaction _______________ is called chemical

________________.

 

2. Reaction rate refers to how quickly or slowly the _______________

disappear and the _______________ appear. It is measured in terms of the

_______________ of the reactants.

 

3. If a reaction is to occur, reacting particles must first _______________ and

this ______________ must be effective. What are the TWO characteristics

of an effective collision?

 

 

4. What are the FIVE major factors that affect reaction rate?

 

 

 

 

 

5. Why would a mixture of gases react faster when the volume they occupy is

decreased?

 

 

 

 

 

 

6. Why would iron filings rust faster than an iron nail?

 

 

 

 

 

 

7. What is the effect of a catalyst on the required energy to achieve effective

collisions?

 

 

 

 

8. ENZYMES act as catalysts in our bodies. Have you ever noticed that your

hands seem to get “stiff” when they get cold? The reason is that these enzyme

reactions causing the muscles to contract __________ down when your hands

are cold so you can’t contract your muscles as fast and your hands feel stiff!

Decreasing temperature _________________ the rate of reaction.

 

 

9. Enzymes are in molds and bacteria that spoil food. Explain, using your

knowledge of factors affecting the rate of reaction, why food doesn’t spoil as

fast when it is refrigerated as it would at room temperature.

 

 

 

 

10. Due to decomposition reactions with oxygen or carbon dioxide in the air, meat

begins to feel slimy and smell spoiled. Explain, using your knowledge of chemical

kinetics, why meat spoils less rapidly when left unsliced.

 

 

 

 

11. Based on your knowledge of factors affecting the rate of reaction, why is there

a danger of explosions in places such as silos and coal mines where there are

large quantities of powdered, combustible materials?

Subject Science
Due By (Pacific Time) 12/05/2012 11:00 am
Report DMCA
TutorRating
pallavi

Chat Now!

out of 1971 reviews
More..
amosmm

Chat Now!

out of 766 reviews
More..
PhyzKyd

Chat Now!

out of 1164 reviews
More..
rajdeep77

Chat Now!

out of 721 reviews
More..
sctys

Chat Now!

out of 1600 reviews
More..
sharadgreen

Chat Now!

out of 770 reviews
More..
topnotcher

Chat Now!

out of 766 reviews
More..
XXXIAO

Chat Now!

out of 680 reviews
More..
All Rights Reserved. Copyright by AceMyHW.com - Copyright Policy