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Introduction to IS

Greenough-pnhs-intro to IS vocab

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.
Created by: kayla35796