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Introduction to IS
Greenough-pnhs-intro to IS vocab
Question | Answer |
---|---|
What is a pure substance? | Matter that always has exactly the same composition. |
What is an element? | A substance that cannot be broken down into simpler substances. |
What is an atom? | The smallest particle of an element. |
What is a compound? | A substance made from two or more simpler substances and can be broken down into simpler substances. |
What is a heterogeneous mixture? | A mixture that has parts that are noticeably different from each other. |
What is a homogeneous mixture? | A mixture with substances that are so evenly distributed that it is difficult to distinguish one substance from another. |
What is a solution? | When substances dissolve and form a homogeneous mixture. |
What is a suspension? | A heterogeneous mixture that separates into layers over time. |
What is a colloid? | Contains some particles that are intermediate in size between the small particles in a solution and the larger particles in a suspension. |