Counting Atoms

Front

What is a compound?

Back

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

Front

What does C2H8O represent?

Back

C2H8O is a chemical formula that represents a compound.

Front

How many atoms of sodium are in 6NaCl?

Back

There are 6 sodium atoms in 6NaCl.

Front

How many carbon atoms are in C6H12O6?

Back

There are 6 carbon atoms in C6H12O6.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of chemical elements, organized by their atomic number, electron configuration, and recurring chemical properties.

Front

Are there any compounds on the periodic table?

Back

No, because only elements are on the periodic table.

Front

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

Back

There are 24 hydrogen atoms in 3(NH₄)₂CrO₄.

Front

What is the significance of subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a compound.

Front

What is the difference between an element and a compound?

Back

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

Front

What does the coefficient in a chemical formula indicate?

Back

The coefficient indicates the number of molecules or formula units of a substance.