Answer: 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.
Feel free to mark as brainliest :)
