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Read About Chemical Reactions

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Chemical Reactions | Reading Material | Grades 6-8
WHAT IS A CHEMICAL REACTION?

A chemical reaction is a process in which new substances are formed. The atoms you start with are regrouped into new substances that have different properties. It’s important to remember that the number of atoms before and after a chemical reaction always stays the same.

To better understand chemical reactions…

WHAT IS A CHEMICAL REACTION?. A chemical reaction is a process in which new substances are formed. The atoms you start with are regrouped into new substances that have different properties. It’s important to remember that the number of atoms before and after a chemical reaction always stays the same. To better understand chemical reactions…

LET’S BREAK IT DOWN!

When substances undergo chemical reactions, their properties change.

When substances undergo chemical reactions, their properties change.

All matter has properties, and those properties can be both observed, and recorded. Properties of matter can also be tested to help determine what the substance is. Examples of these properties are magnetism, flammability, density, and odor. Many other properties of matter exist and by examining a substance’s properties, it can help us predict how it may interact with other substances.

When substances undergo chemical reactions, their properties change. All matter has properties, and those properties can be both observed, and recorded. Properties of matter can also be tested to help determine what the substance is. Examples of these properties are magnetism, flammability, density, and odor. Many other properties of matter exist and by examining a substance’s properties, it can help us predict how it may interact with other substances.

The total number of atoms does not change in a chemical reaction.

The total number of atoms does not change in a chemical reaction.

This is commonly known as the Law of Conservation of Matter. Because matter cannot be created or destroyed, atoms can only rearrange themselves in a chemical reaction. For this reason, the final mass after a reaction has taken place will be identical to the initial mass before the reaction took place, even if new substances were formed. Atoms combine to form molecules, and those molecules interact with others differently based on their properties. When molecules interact with each other, they rearrange to form new substances that have different properties than before.

The total number of atoms does not change in a chemical reaction. This is commonly known as the Law of Conservation of Matter. Because matter cannot be cre