What types of matter have the property of density? 1.Everything except gasses have density.

2.Only heavy matter has density.

3.All solids, liquids, and gases have density.

4.Only solid matter has density.

Try 3.

Explanation:

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Explanation:

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2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.