chemistry

3. the quality, condition, or fact of being exact and accurate
7. the quantity of matter in a physical body
8. the SI base unit of length
10. A measure of how innaccurate a measurement is
13. he strength and vitality required for sustained physical or mental activity.
14. the quality or state of being correct or precise.
17. a metric unit of capacity
19. each of the digits of a number that are used to express it to the required degree of accuracy, starting from the first nonzero digit.
20. The temperature scale where 32 degrees is the freezing point of water and 212 degrees at

1. a form of presenting very large numbers or very small numbers in a simpler form.
2. (of a letter, figure, or symbol) written or printed above the line
4. the SI unit of mass
5. how hot it is
6. The SI unit of energy,
9. a mistake
11. the size, length, or amount of something
12. mass of a unit volume of a material substance
15. unit of thermal energy
16. temperature at which a thermodynamic system has the lowest energy
18. a metric unit of mass equal to one thousandth of a kilogram.