Answer:
Making observations
Explanation:
In this step of the scientific method you are expected to observe the experiment and write down what you see, hear, smell, etc. (which is using your senses)
Physical Science Practice Test:
1. B. Making observations
2. C. 60 millimeters
3. D. a clock with one hand to measure the hour, on hand to measure the minutes, and one hand to measure the seconds
4. B. Compounds
5. D. Composition
6. D. Water breaking down into hydrogen and oxygen
7. D. All of the above
8. C. 140 kilopascals
9. C. Atoms contain subatomic particles
10. D. An electrons has far less mass than either a proton or neutron
11. B. Electrons travel around the nucleus in fixed energy levels with energies that vary from level to level
12. A. An electron has the same amount of energy in all orbitals
13. D. Mass
14. A. One or seven valence electrons
15. Cs (cesium)
16. B. Two oxygen atoms
17. D. 2Na +Br2 (little) 2NaBr
18. D. 92.4 g
19. A. Increases
20. B. 1/4
