Lab 14 IMF

What is the first step in preparing the temperature probe for the experiment?

• Calibrate the probe

• Connect the probe to the lab quest

• Clean the probe

• Turn on the device

How long should the temperature probe be placed in the liquid to establish the initial temperature?

• 30 seconds

• 10 seconds

• 15 seconds

• 20 seconds

After removing the probe from the liquid, you should:

• Dry it with a cloth

• hold it to the edge of the desk

• Rinse it with water

• Store it immediately

When should the minimum temperature (T2) be recorded during the experiment?

• At the start of the experiment

• At the end of the experiment

• At the coldest point during the experiment
  When the temperature has reached a minimum and has begun to increase

• At any random time during the experiment

For each liquid, subtract the minimum temperature from the maximum temperature to determine ____.

• the temperature change

• the average temperature

• the boiling point

• the freezing point

How many tries are you doing for each substance?

• 1

• 2

• 3

• 4

what are you finding the average for ?

• The change in temperature only of each liquid

• The T1 each liquid

• The T2 each liquid

• Both T1 and T2

What will you study in the experiment?

• temperature changes caused by the evaporation of several liquids and relate the temperature changes to the strength of intermolecular forces of attraction

• temperature changes only

• strength of intermolecular forces of attraction only

• evaporation of several liquids

The temperature change is greater if more evaporation occurs (weaker intermolecular forces). true or false

• true

• false

The temperature change is greater if more evaporation occurs (stronger intermolecular forces). true or false

• true

• false