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Questions and Answers
Which of the following is NOT one of the three phases of matter?
What is the main difference between an element and a compound?
Which of the following is an example of a pure substance?
What is a solution?
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Which of the following is an impure substance?
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Study Notes
Phases of Matter
- Matter exists primarily in three phases: solid, liquid, and gas.
- Examples typically include ice (solid), water (liquid), and steam (gas).
- Plasma is also considered a phase of matter but is not one of the three basic ones.
Element vs. Compound
- An element is a pure substance that cannot be broken down into simpler substances by chemical means.
- A compound consists of two or more elements chemically combined in fixed proportions, possessing different properties than the individual elements.
Pure Substances
- A pure substance has a constant composition and distinct chemical properties, which can be either an element or a compound.
- Examples include distilled water (H2O) and oxygen gas (O2).
Solutions
- A solution is a homogeneous mixture where one substance (solute) is dissolved in another (solvent).
- Common examples include saltwater and sugar dissolved in tea.
Impure Substances
- Impure substances contain two or more different elements or compounds mixed together, lacking uniform composition.
- Examples include air (a mixture of gases) and sand (a mix of different minerals and particles).
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Description
Test your knowledge of chemistry with this comprehensive review quiz! Explore the fundamental concepts of matter, including its composition, properties, and different phases. Brush up on your understanding of solids, liquids, and gases, and enhance your understanding of this fascinating scientific field. Perfect for students and enthusiasts alike!
