Required Practical: Temperature Changes (Energy Changes) Flashcards
1
Q
Neutralisation reactions are ALWAYS ___________
A
exothermic
2
Q
- We place a polysterene cup in a beaker, as it is employed as an…
A
insulator - less thermal energy that is given off in the exothermic reaction will escape
3
Q
- Measure acid using a 50cm3 measuring cylinder, and make sure the _______ is at 30cm3
A
miniscus
4
Q
- Record starting…
A
temperature
5
Q
- Using _______ measuring cylinder, measure 5cm3 of….
A
10cm3
alkali
6
Q
- Put in cup and place lid on while stirring gently with thermometer to ensure that heat energy is…
A
distributed evenly
7
Q
- Record final temperature and…
A
calculate temperature change
8
Q
After step 6, REPEAT step 4 i.e. add 5cm3 more alkali and then measure max temp again
A
9
Q
- Keep doing so until there is about ______cm3 of alkali in the acid
A
40
10
Q
- Record the temperature changes after each addition of alkali to see the process of the exothermic reaction
A
