Measurement

Question 1

How do you measure time?

Answer 1

digital stop watch

Question 2

How do you measure temperature?

Answer 2

Mercury in glass thermometer

Question 3

How do you measure mass?

Answer 3

Electric top pan balance

Question 4

What are the 4 instruments used to measure volume?

Answer 4

1. Beaker
   used to estimate liquid
2. Measuring cylinder
   more accurate than a beaker
3. pipette
   measures fixed volumes accurately
4. Burette
   used for measuring variable volumes of liquid accurately.

Question 5

what is the criteria of purity?

Answer 5

The purity of a substance is defined as the degree to which a substance is undiluted or unmixed with other material. A pure substance is made up of a single substance.