Molecules made up of two or more elements are called compounds. Water, calcium oxide, and glucose are molecules that compound.
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Circles in the same plane and having the same center are called congruent circle
269568 meters if those numbers are accurate
The role of the snake is a "predator"
Sodium hydroxide (often called just "lye") makes bar soap - solid, opaque bar soap
potassium hydroxide (often called "potash") makes liquid soap - flowing, clear or translucent liquid soap