Chemical

Chemicals are the basic building blocks of matter. They are substances with a distinct molecular composition that can undergo various reactions to form new substances. Chemicals can be found in all aspects of our daily lives, from the food we eat to the air we breathe.

Types of Chemicals

• Element: A substance made up of only one type of atom, such as oxygen or gold.
• Compound: A substance made up of two or more different types of atoms bonded together, such as water (H2O) or carbon dioxide (CO2).
• Mixture: A combination of two or more substances that are not chemically combined, such as saltwater or air.

Chemical Reactions

Chemical reactions occur when substances interact to form new substances. During a chemical reaction, bonds between atoms are broken and new bonds are formed. Some common types of chemical reactions include synthesis, decomposition, combustion, and oxidation-reduction.

Chemical Properties

Chemicals have specific properties that determine how they will behave under certain conditions. These properties include flammability, reactivity, toxicity, and acidity. Understanding the properties of chemicals is important for handling them safely.

Study Guide

1. Define a chemical and provide examples of different types of chemicals.
2. Explain what happens during a chemical reaction and give examples of common chemical reactions.
3. List and describe the chemical properties of substances.
4. Discuss the importance of understanding chemicals and their properties in everyday life.

[Chemical] Related Worksheets and Study Guides:

• Science Worksheets: Chemical and physical changes of matterScience • Fifth Grade
• Chemical bondingScience • Eighth Grade
• Chemical reactionsScience • Eighth Grade
• Chemical Compounds - Set IIChemistry • High School