Counting Atoms

Front

What is the chemical formula for three hydrogen (H), one sulfur (S), and four oxygen (O)?

Back

H₃SO₄

Front

How many atoms are there TOTAL in H₂SO₄?

Back

7

Front

What does the subscript in a chemical formula tell you?

Back

How many atoms are present

Front

What is evidence that a chemical reaction occurs when coal burns?

Back

A new substance is produced

Front

How many elements are in the chemical formula NaHCO₃?

Back

4

Front

What is a chemical formula?

Back

A representation of a substance using symbols for its constituent elements.

Front

What does the coefficient in a chemical formula indicate?

Back

The number of molecules present.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.