Counting Atoms

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

Are there any compounds on the periodic table?

Back

No, because only elements are on the periodic table.

Front

What does C2H8O represent?

Back

C2H8O is a chemical formula that represents a compound.

Front

What do coefficients in chemical formulas do?

Back

Coefficients multiply all atoms in the molecule.

Front

How many elements are in C6H12O6?

Back

There are 3 different elements: Carbon (C), Hydrogen (H), and Oxygen (O).

Front

How many Hydrogen atoms are in 3(NH₄)₂CrO₄?

Back

There are 24 Hydrogen atoms.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H2O.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down, while a compound is made of two or more elements chemically combined.

Front

What does the subscript in a chemical formula indicate?

Back

The subscript indicates the number of atoms of the element in the molecule.

Front

What is the significance of the chemical formula CH4?

Back

CH4 represents methane, a compound made of one carbon atom and four hydrogen atoms.