Measuring and apparatus Cambridge IGCSE Chemistry revision
Not started
Learn it
In plain words
Good chemistry starts with choosing the right tool. A measuring cylinder is fine for "about 50 cm³". When the exact volume matters, as in a titration, you need a pipette or a burette. Half the marks in practical questions come from naming the right one.
Three things to know
- Volume of liquid: a measuring cylinder (roughly), a pipette (one exact volume), a burette (any volume, exactly). Volume of gas: a gas syringe. Also a balance for mass, a stopwatch for time and a thermometer for temperature.
- A solute dissolves in a solvent to make a solution. A saturated solution holds as much solute as it can at that temperature.
- After filtering, the solid on the paper is the residue and the liquid that ran through is the filtrate.
Tips and tricks
- Burette: variable volume, read to 0.05 cm³. Pipette: one fixed volume, such as 25.0 cm³. Measuring cylinder: approximate.
- To make an experiment more accurate, name a better piece of apparatus: "use a gas syringe instead of counting bubbles".
It lands in your notebook with its questions as flashcards.
Measuring and apparatus: 5 questions and answers
These are the quiz’s questions. Do the quiz first, then come back here for the ones that got you.
Which apparatus adds a variable volume of liquid accurately in a titration?
Its tap lets you add as little as one drop.
Which apparatus is best for collecting a gas and measuring its volume?
The plunger moves out as the gas collects.
What is a solvent?
Water is the most common solvent.
What is a saturated solution?
It is holding as much solute as it can.
Which apparatus measures out exactly 25.0 cm³ of a solution?
A pipette delivers one fixed volume very accurately.
Quiz
5 questions
Tap an answer and you’ll see straight away whether it’s right, and why.
Worksheet
3 questions, 6 marks. Write your answers on paper, then check them.
Measuring and apparatus
Cambridge IGCSE Chemistry 0620 · 6 marks · papermunch.org
Name ______________________________ Date ______________
Name the best piece of apparatus for measuring (a) exactly 25.0 cm³ of a solution and (b) about 50 cm³ of water.[2]
Show answerHide answer
(a) A pipette. (b) A measuring cylinder.
State what is meant by a solute and by a solvent.[2]
Show answerHide answer
The solute is the substance that dissolves. The solvent is the liquid it dissolves in.
State what is meant by a saturated solution.[2]
Show answerHide answer
A solution in which no more solute can dissolve at that temperature.
Answers: Measuring and apparatus
- 1. (a) A pipette. (b) A measuring cylinder.
- 2. The solute is the substance that dissolves. The solvent is the liquid it dissolves in.
- 3. A solution in which no more solute can dissolve at that temperature.