PERFORMANCE ASSIGNMENT                  S6a

Rate of Reaction for Alka-Seltzer

 

 

In order for chemical reactions to occur, particles, atoms or ions must come into contact with each other.  Increasing the frequency of contact will increase the rate at which products are formed.

 

Making A Hypothesis

 

Write two factors that might increase the chance that particles will come into contact with each other in the reaction of alka-seltzer.

 

1.

 

2.

 

Write a hypothesis statement for each of the factors.

 

1.

 

2.

 

Describe the procedure that could be used to test each of the hypothesis.

 

Particle size and the temperature of solution are two factors that might effect the rate of reaction.  Make a prediction about the effect of each on rate of reaction.

 

1.

 

2.

 

Make up a procedure that would test the validity of the predictions made.  Make sure that four data points are collected for each factor.

 

 

Data:

 

Trial	Temperature	Timetemp	Size	Timesize
1
2
3
4

 

Collect data for the class:

 

Trial	Temperature	Timetemp	Size	Timesize

 

Analyze:

 

Graph the results of the class data.

 

 

1. What is the difference between theory and hypothesis?

 

2. Were the hypothesis made confirmed or rejected?

 

3. Restate the hypothesis as theories.