Contents
Key Stage 3
Meaning
The kilogram (kg) is the scientific unit for measuring mass.
About Kilograms
- Kilograms are shortened to kg with a lower case k and a lower case g.
- Kilo refers to one thousand as there are 1000 grams in a kilogram.
- The average mass of an adult human is around 70 kilograms.
- The mass of an apple is 0.1 kilograms.
Converting to Kilograms
| Unit | To convert | Kilograms |
| 1 megagram (1Mg) | Convert to kilograms x1000. | 1000kg |
| 1 kilogram (1kg) | Convert to kilograms x1. | 1kg |
| 1 gram (1g) | Convert to kilograms /1000. | 0.001kg |
| 1 milligram 1(mg) | Convert to kilograms /1000,000. | 0.000001kg |
| 1 microgram 1(µg) | Convert to kilograms /1000,000,000. | 0.000000001kg |
Key Stage 4
Meaning
The kilogram (kg) is the SI Unit of mass.
About Kilograms
- Kilograms are shortened to kg with a lower case k and a lower case g.
- Kilo refers to one thousand as there are 1000 grams in a kilogram.
- The average mass of an adult human is around 70 kilograms.
- The mass of an apple is 0.1 kilograms.
Converting to Kilograms
| Unit | To convert | Kilograms |
| 1 megagram (1Mg) | Convert to kilograms x103 | 1x103kg |
| 1 kilogram (1kg) | Convert to kilograms x1 | 1kg |
| 1 gram (1g) | Convert to kilograms x10-3 | 1x10-3kg |
| 1 milligram 1(mg) | Convert to kilograms x10-6 | 1x10-6kg |
| 1 microgram 1(µg) | Convert to kilograms x10-9 | 1x10-9kg |
References
AQA
- Kidneys, pages 155-8, GCSE Biology, Hodder, AQA
- Kidneys, pages 186-191, GCSE Biology; Third Edition, Oxford University Press, AQA
- Kidneys, pages 215, 219-221, GCSE Biology, CGP, AQA
- Kidneys, pages 75, 76, GCSE Biology; The Revision Guide, CGP, AQA
- Kidneys; kidney failure, pages 219, 220, GCSE Biology, CGP, AQA
- Kidneys; kidney transplants, pages 220, 221, GCSE Biology, CGP, AQA