Temperature Changes

Question 1

What type of reaction is it ?

Answer 1

Neutralisation

Question 2

What is the independent valuable ( what we measure )

Answer 2

Volume of sodium hydroxide solution

Question 3

What is the dependant variable ?

Answer 3

Maximum temperature reached

Question 4

What are the control variables ?

Answer 4

Volume of acid
Concentration of both solutions

Question 5

What is the first stage ?

Answer 5

Measure 30cm3 of dilute hydrochloric acid in a measuring cylinder

Question 6

What is the second stage ?

Answer 6

Transfer this to a polystyrene cup
And stand it inside a beaker to stop it falling over
Place a thermometer in the cup

Question 7

What is the third stage ?

Answer 7

Using a measuring cylinder measure 5cm3 of sodium hydroxide solution
Add this to the polystyrene cup
Then fit a plastic lid and place tin the thermometer

Question 8

What is the fourth stage ?

Answer 8

Using the thermometer gently stir the solution.
The temperature will increase and monitor the temperature rise
When it stops changing record the highest temperate reached

Question 9

What is the fifth stage ?

Answer 9

Rinse the polystyrene cup
Repeat experiment multiple times using 10cm3 of sodium hydroxide and increase the volume by 5cm3 until we reached 40cm3

Question 10

What should you do when you have repeated it with every volume ?

Answer 10

Repeat all again once more for two sets of results to remove anomlyies