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Chem CH1 Section 1

Chemistry CH1 Chemistry: The Science of Matter Section 1

alloy a solid solution containing different metals, and sometimes nonmetallic substances
aqueous solution a solution in which the solvent is water
chemistry the science that investigates and explains the structure and properties of matter
compound a chemical combination of two or more different elements joined together in a fixed proportion
element a substance that cannot be broken down into simpler substances
formula a combination of chemical symbols that show what elements make up a compound and the number of atoms in each element
mass the measure of the amount of matter an object contains
matter anything that takes up space and has mass
mixture a combination of two or more substances in which the basic identity of each substance is not changed
physical change a change in matter where its identity does not change
physical property a characteristic of matter that is exhibited without a change of identity
property the characteristics of matter; how it behaves
qualitative an observation made without measurement
quantitative an observation made with measurement
scientific model a thinking device, built on experimentation, that helps us understand and explain macroscopic observations
solute the substance that is being dissolved when making a solution
solvent the substance that dissolves the solute when making a solution
solution a mixture that is the same throughout, or homogeneous
substance matter with the same fixed composition and properties