The closeness of a measurement to its true value is a measure of its

The closeness of a measurement to its true value is a measure of its accuracy. This term is the degree of which a certain measurement conforms to the correct value or the standard value. It is not the same with the term precision. Precision, on the other hand, is a measure used to characterize the closeness of the data measured.

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1. B, a leaf changing color in autumn

2. B, well-tested explanation for a broad set of observations

3. C, evaluate

4. B, accuracy

5. C, 7.30 x 10^-7 km

6. B, 11mm^2

7. A. 2.9 x 10^7 m ^3

8. D, kelvin

9. B, 1dg

10. B, 0.987 g

11. B, 1.1 x 10^2 ml

12. C, decreases

13. D, -34*C

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14. The chemistry that was before was based on observation. Thanks to him it is now based on measurement. He proved that in order for an object to burn, it requires oxygen for that process to occur.

15. Organic chemistry: study of carbon

Physical chemistry: study of chemistry with physics

Biochemistry: study of chemical process

Analytical chemistry: study and making of tools to measure matter

Inorganic chemistry: study of non organic compounds

16. Get creative :)

17. 225.7g

multiply the volume: 1*4*2.5=10

multiply the number above with the density of osmium

22.57*10=225.7g

18. It is easier to measure because it is in whole numbers(decimal) instead of fractions.

19. Mass is how much matter an object has. Weight is how much affect gravity has on that object. If I go to the moon, I will weight less because of the lack of gravity, but I will still retain the same mass.

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Explanation: