Chemical Equations

Representing Chemical Changes

By gilson granil

Parts of a Chemical Equation

Chemical equations are used to represent, or show, chemical reactions.

Fill in the Blank

A chemical _________ is used to show a chemical reactions

Multiple Choice

A math equation is separated by equal (=) sign while a chemical equation is separated by _________.

• an arrow

• a positive sign

• a negative sign

Multiple Choice

The number written before a compound shows the number of __________.

• atoms

• molecules

• reaction

Fill in the Blank

The reactants are found at the _______ side of the equation.

Multiple Choice

The products are found at the _______ side of the chemical equation.

• right

• left

• center

Multiple Choice

The SMALL number written after an element symbol represents the number of __________.

• atoms

• molecules

• reaction

The iron nail reacts with oxygen to form RUST.

​

Common name: RUST

Chemical name: iron oxide

Chemical Formula: Fe₂O₃ ​

​Some text here about the topic of discussion.

Example of a Chemical Reaction

Multiple Choice

What are the reactants on the image?

• iron nail

• oxygen

• both are correct

Multiple Choice

What is the product on the given image?

• iron nail

• oxygen

• rust