Question

1. which is an example of a compound?

water
sand
iodine
gold

Explanation:

• A compound is a substance formed when two or more elements are chemically bonded together.
• Water (\(H_2O\)) is made of hydrogen and oxygen, so it is a compound.
• Sand is a mixture of different substances (like silica, small rocks etc.).
• Iodine (\(I_2\)) is an element (a pure substance made of only one type of atom).
• Gold (\(Au\)) is also an element.

Answer:

water