Counting Atoms

Front

What is the chemical formula for water?

Back

H₂O

Front

How many atoms of Hydrogen are in H₂O?

Back

2

Front

What is a compound?

Back

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

Front

Which of the following is a compound: Co, O₂, C, CO₂?

Back

CO₂

Front

How many atoms are present if there is no subscript following the element symbol?

Back

1

Front

How many Oxygen atoms are in H₂O?

Back

1

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

Front

How many atoms of carbon (C) are in C₆H₁₂O₆?

Back

6

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms.

Front

What is the chemical formula for carbon dioxide?

Back

CO₂