MEDIUM
AS and A Level
IMPORTANT
Earn 100

i) The test-tube contained 10 cm3 of lime water. The learner measured this volume in a 10 cm3 measuring cylinder with calibration marks every 0.1 cm3. Give the margin of error when reading this scale. State the percentage error in measuring the volume of lime water for this investigation. 
ii) Explain what is likely to be the greatest source of error in this investigation.

Important Questions on Practical Skills 1

MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 31 - Practical Skills 1>EXAM-STYLE QUESTIONS>Q 1

A learner investigated the ease with which various metal carbonates decompose on heating. She decided to heat equal masses of each carbonate and time how long it took for the carbon dioxide given off to turn lime water in a test-tube cloudy. 

Give the type of graph the learner should use to display the data from the investigation.