Questions and Answers
Which type of substances can be physically separated into their parts?
Materials
What causes a chemical change in water that breaks it down into oxygen and hydrogen?
Running electricity through the water
Which substances cannot be physically separated or chemically changed into simpler substances?
Elements
What is a substance that can only be separated into components by chemically changing the substance?
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What does physically separating pure water result in?
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Study Notes
Physical Separation
- Mixtures can be physically separated into their parts.
- Examples of mixtures include sand and water, salt and pepper, and oil and vinegar.
Chemical Change
- Electrolysis causes a chemical change in water that breaks it down into oxygen and hydrogen.
- Electrolysis is a process that involves the passage of an electric current through a substance.
Elements
- Elements are substances that cannot be physically separated or chemically changed into simpler substances.
- Examples of elements include oxygen, hydrogen, and carbon.
Compounds
- Compounds are substances that can only be separated into components by chemically changing the substance.
- Examples of compounds include water (H2O) and carbon dioxide (CO2).
Physical Separation of Pure Water
- Physically separating pure water results in the same substance, water.
- No new substances are formed during physical separation.
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Description
Test your knowledge on analyzing particles of matter and their separation methods. Explore how different materials can be physically separated and discover substances that cannot be separated due to identical particle properties.
