7) How did changing the decreasing the concentration of one of the reactant change the rate of reaction (circle one) ?
7) How did decreasing the concentration of one of the reactant change the rate of reaction (circle one) ?
Changed: 33c33
Name: __________________________ Period: ____
Answer the following questions about the Kinetic Labs.
1) In the Lycopodium powder Demo, which one of the following types of reaction was it? (Circle one)
a) Synthesis b) Decomposition c) Single Replacement D) Double replacement e) Combustion
2a) Was the chemical reaction in Lycopodium Demo (circle one) Exothermic or Endothermic ?
2b) What observation do you make to come to your answer in Question 2a above? ____________________
3) Which one of the following factors cause the rate of reaction to increase in the 2nd part of the Lycopodium powder Demo (circle one)?
a) Increase temperature b) Added a catalyst c) Increase surface area
4) In the Clock Lab, what physical observation indicated that the reaction started, ______________________
5) Since your answer to Question 4 is NOT what you wrote down in lab notebook, what measurement did you record?
6) Which of the following did you change in the concentration change part of the Clock lab (first part) (circle one).
a) Solution A b) Solution B c) Water D) Solution A and water e) Solution B and water
7) How did decreasing the concentration of one of the reactant change the rate of reaction (circle one) ?
a) Increase b) decreased c) Stayed constant
8) Looking at the measurements, which one of the following best describe how the value of your measurement change as you decreased the concentration of one of the reactants
a) Recorded values increased b) Recorded values decreased c) Recorded values stayed same d) There was no pattern
9) When you Increased the temperature of the reactants (in the hot water bath), what happened to the recorded measurement compared to the room temperature trials (circle one)?
a) Value increased b) Value decreased c) Stay the same
10) When you Decreased the temperature of the reactants (in the cold water bath) what happened to the recorded measurement compared to the room temperature trials (circle one)?
a) Value increased b) Value decreased c) Stay the same