Chem 9.5 Investigating endothermic changes Flashcards
1
Q
When planning an investigation, what are the major things to look at?
A
- Identify the variables
- Do preliminary work
- Choosing the right apparatus/equipment
- Assess hazards and controlling risk
2
Q
To measure small masses, what equipment must be used?
A
A balance
3
Q
To measure very small temperature changes, what must be used?
A
A thermometer
4
Q
Why is it mandatory to repeat investigations at least 3 times?
A
- To reduce error
- To get more reliable results
5
Q
What can you do after getting 3 results?
A
Find the average value of those 3 results.
