QUESTION 4 Put the terms in the best order for which they
happen.
Hypothesis
Analysis
Observation
Conclusion (plz help)

Observatin, hypothesis, analyize, conclusion

Explanation:

First, you observe, and then u form a  hypothesis of what you odserve, then you analyze, and last you do ur conclusion. Trust me.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.