Counting Atoms

Front

What is the total number of different types of elements in the compound C6H12O6?

Back

3 (Carbon, Hydrogen, Oxygen)

Front

How many total atoms are in the compound H2SO4?

Back

7 (2 Hydrogen, 1 Sulfur, 4 Oxygen)

Front

How many hydrogen atoms are present in the compound H2SO4?

Back

2

Front

How many hydrogen atoms are in 4H2O?

Back

8 (4 molecules of H2O, each containing 2 Hydrogen atoms)

Front

What do we call molecules that are made of more than one type of atom?

Back

Compounds

Front

Define an element in the context of chemistry.

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is the difference between an element and a compound?

Back

An element consists of only one type of atom, while a compound consists of two or more different types of atoms.

Front

How do you determine the total number of atoms in a chemical formula?

Back

Add the subscripts of all the elements in the formula.

Front

What is the subscript in a chemical formula?

Back

A number written below and to the right of an element symbol indicating the number of atoms of that element in a molecule.