Introduction to Compounds
Explore the basic concepts of compounds, elements, and mixtures for Grade 4 science.
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Introduction to Compounds
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Read each question carefully and answer to the best of your ability.
1. What is formed when two or more different elements combine chemically?
An element
A mixture
A compound
A solution
2. Water is a made of hydrogen and oxygen.
3. The smallest particle of an element is called an .
4. A compound can be easily separated back into its original elements.
True
False
5. Give an example of a compound you find in your everyday life and name the elements it is made from.
When elements combine to form compounds, they create chemical bonds. Look at the image below showing how a covalent bond is formed.

6. In your own words, what do you think is happening when a covalent bond forms?