Physical Quantities

Question 1

what are some physical quantities?

Answer 1

mass, time, temperature and volume

Question 2

what is the SI unit of mass?

Answer 2

kilogram (kg)

Question 3

how can you measure mass?

Answer 3

• beam balance

- electronic balance

Question 4

what is the precision of using an electronic balance?

Answer 4

nearest 0.01g

Question 5

what is the SI unit of time?

Answer 5

seconds (s)

Question 6

what do you use to measure time?

Answer 6

stopwatch

Question 7

what is the precision of using a stopwatch?

Answer 7

nearest 0.01s

Question 8

what is the SI unit of temperature?

Answer 8

degree celcius

Question 9

how can you measure temperature

Answer 9

• mercury or alcohol thermometer

- data logger with temperature sensor

Question 10

what is the precision of the mercury or alcohol thermometer?

Answer 10

nearest 0.5 degree celsius

Question 11

what is the precision of the data logger with temperature sensor?

Answer 11

nearest 0.1 degree celsius

Question 12

what is the SI unit of volume?

Answer 12

cubic metre

Question 13

how can you measure volume?

Answer 13

• measuring cylinder
• burette
• pipette
• gas syringe

Question 14

what is the precision of a measuring cylinder?

Answer 14

nearest 1cm 3

Question 15

what is burette used for measuring?

Answer 15

variable volumes

Question 16

what is the precision of using a burette?

Answer 16

nearest 0.05cm 3

Question 17

what is pipette used for measuring?

Answer 17

fixed volumes such as 20cm 3 and 25.0cm 3

Question 18

what is gas syringe used in measuring?

Answer 18

gases