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Compound Definition

A compound forms when atoms from different elements combine, creating a substance with new properties. For example, combining hydrogen and oxygen forms water, a compound with unique characteristics.

View Lesson on Chemical Reactions
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Chemical Reactions

LESSON MATERIALSmove

Fun Facts

  • Burning steel wool forms the compound iron oxide from iron and oxygen.
  • The compound hydrogen peroxide breaks down into water and oxygen gas with a catalyst.
  • Luminol reacting with the compound hydrogen peroxide produces light and nitrogen gas.

Why Do We Need To Know About Compound

Learning about compounds helps us know how chemical reactions work. This is important for making new medicines and advanced materials. Scientists use these reactions to make new drugs that can save lives and to create new kinds of materials.

This knowledge helps in making better rocket fuels for space travel and in making new types of solar cells for cleaner energy. Understanding compounds and how they react with each other is key in many fields. Chemistry is essential in solving different problems and helping technology move forward.

Frequently Asked Questions

How is a physical change different from a chemical change?
In a physical change, no new substances are formed. In a chemical change, new substances are formed.
How do you know a chemical reaction has happened?
If a new substance is formed, it has different properties.
Give an example of a chemical change.
Steel wool burning, which causes the iron to combine with oxygen and form iron oxide.
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