A water globe is not considered a compound machine. A compound machine is a device that consists of two or more simple machines working together to accomplish a task. A water globe typically operates as a simple, standalone object.
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No. Unless you count the ability to funnel running water into the drain as an inclined plane, it doesn't even qualify as a simple machine.
Water is a compound - H2O.
Pure distilled water is a compound. It is composed of two different elements, hydrogen and oxygen, which chemically combine to form water molecules (H2O).
To find water by mass in a compound, you can calculate the difference in mass before and after heating the compound to drive off the water. The lost mass represents the mass of water present in the compound. You can then calculate the percentage of water in the compound by dividing the mass of water by the total mass of the compound and multiplying by 100.
Typically, water is represented by the color blue in a snow globe to convey a sense of calm and tranquility.