PLEASE HELP!! Explain the physical and chemical properties of water, including its different phase changes. Why is water so critical for human life?
Submission

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Explanation:

Water has a very simple atomic structure. This structure consists of two hydrogen atoms bonded to one oxygen atom (Figure 4.1). The nature of the atomic structure of water causes its molecules to have unique electrochemical properties. The hydrogen side of the water molecule has a slight positive charge (see Figure 4.1). On the other side of the molecule a negative charge exists. This molecular polarity causes water to be a powerful solvent and is responsible for its strong surface tension (for more information on these two properties see the discussion below).

gas

explanation:

smoke is the matter of a gas