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

I just took the test and got 100%

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

For the last 6 question please do not copy my exact answer

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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conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.