Experimental Chemistry - SI unit

Question 1

SI unit of mass

Answer 1

kilogram (kg)

Question 2

SI unit of volume

Answer 2

cubic metre (m3)

Question 3

SI unit of temperature

Answer 3

kelvin (K)

Question 4

SI unit of time

Answer 4

second (s)

Question 5

Apparatus used to measure mass and it’s accuracy

Answer 5

Electronic balance or beam balance. Accuracy is dependent on instrument, to 2 or 3 dp

Question 6

Apparatus used to measure gas and its accuracy.

Answer 6

Gas syringe, accuracy is dependent on instrument, to 2 or 3 dp.

Question 7

4 apparatuses used to measure liquids.

Answer 7

Beaker, Measuring Cylinder, Pipette, Burette

Question 8

Accuracy of Beaker

Answer 8

Measures approximate volumes

Question 9

Accuracy of Measuring cylinder

Answer 9

Measures volume to the nearest cm3

Question 10

Accuracy of Pipette

Answer 10

Measures a fixed volume very accurately, eg: 20.0 cm3, 25.0 cm3.

Question 11

Accuracy of Burette

Answer 11

Measures volume very accurately to the nearest 0.1 cm3. Eg: 26.70 cm3, 26.75 cm3)

Question 12

Apparatus used to measure temperature and its accuracy.

Answer 12

Thermometer, temperature sensor attached to data logger. Accuracy to the nearest 0.5 degree celcius.

Question 13

Apparatus used to measure time and its accuracy.

Answer 13

Electronic stopwatch. Accuracy is dependent on the instrument, to 2 or 3 dp.