Counting Atoms and Elements Practice

Front

What is the total number of atoms in the compound H₂SO₄?

Back

7

Front

How many Oxygen atoms are present in Al(OH)₃?

Back

3

Front

Which element has the greatest number of atoms in the compound AgNO₃?

Back

Oxygen

Front

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

Back

6

Front

What is the total number of atoms in the compound C₂H₈O?

Back

11

Front

Define an atom.

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

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 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 chemically bonded.

Front

How do you calculate the total number of atoms in a compound?

Back

Add the number of atoms of each element in the chemical formula.