Counting Atoms and Elements

Front

What do the blue numbers in a chemical formula represent?

Back

Subscripts

Front

If an element symbol has no subscript next to it, how many atoms of this element are present?

Back

1

Front

What is a pure substance that cannot be broken down into simpler substances?

Back

Element

Front

In the compound AgNO3, which element has the greatest number of atoms?

Back

Oxygen

Front

How many Sodium (Na) atoms are in the formula 6NaCl?

Back

6

Front

What is the term for a substance made of two or more elements chemically combined?

Back

Compound

Front

What is the smallest unit of an element that retains its properties?

Back

Atom

Front

What is the term for the number of atoms of each element in a compound?

Back

Chemical formula

Front

What does a coefficient in a chemical equation indicate?

Back

The number of molecules or moles of a substance

Front

What is the difference between a molecule and a compound?

Back

A molecule can be made of the same or different elements, while a compound is made of different elements.