Ice melting to water is an example of a physical reaction. Which of the followin

Question

Ice melting to water is an example of a physical reaction. Which of the following temperatures do you believe will cause this reaction to proceed the fastest?

Two clear liquids are mixed and the result is a clear solution. Do you think this means that no reaction could have occurred.

Reaction rate can be affected by many things. In your opinion, which of the following could not affect the speed of a reaction?

If the rate of a reaction is doubled, how would you expect the reaction time to be affected?

Which of the following reactions between acid and base (such as baking soda and vinegar) do you expect to complete the fastest?

If a reaction is changing color from red to blue, do you think that the speed of the reaction will determine how close to blue the result will be.

A large salt crystal must be dissolved in water. Which of the following do you believe will speed up this physical reaction?

Ice melting to water is an example of a physical reaction. Which of the following temperatures do you believe will cause this reaction to proceed the fastest?

Ice in the fridge at 5°C Ice at room temperature, 20°C Ice in the oven at 200°C Ice in the freezer at 0°C

Explanation / Answer

1.Ice in the oven at 200 0 C.

REASON: GREATER TEMPERATURE DIFFERENCE RESULTS IN FASTER REACTION.

2.NO

REASON: EVEN AFTER REACTION MIXTURE CAN ATTAIN HOMOGENEOUS SOLUTION FORM.

3.Color of reactants

REASON:

   RATE OF REACTION DOESNT DEPEND ON COLOR OF REACTION

4.Halved

REASON: IT IS OBVIOUS WHEN RATE WILL INCREASE COMPLETION TIME WILL DECREASE.

5.Highly concentrated acid with highly concentrated base

.REASON:

HIGHER THE CONCENTRATION HIGHER WILL BE TENDENCY TO REACT.

6.NO

7.Smash the salt crystal into very small pieces.

AND STIR THE WATER.

REASON: IT INCREASES THE SURFACE AREA.

REASON: IT INCREASES MOTION OF COMPONENTS.

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