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chem stack 2
chapter 2 vocab
Question | Answer |
---|---|
matter | substance in which all materials are made |
pure substance | A sample of matter, either an element or a compound, that consists of only one component |
element | 1.One of the simplest or essential parts or principles of which anything consists, or upon which the constitution or fundamental powers of anything are based |
compound | combinations of two or more elements |
mixture | a mixture is a material system made up by two or more different substance which are (mixed) together but are not combined chemically. |
homogeneous mixture | A substance that is uniform in composition |
heterogeneous mixture | consists of visibly different substances or phases |
distillation | a unit operation, or a physical separation process, and not a chemical reaction. |
physical changes | any change not involving a change in the substance's chemical identity |
physical properties | used to observe and describe matter |
chemical changes | bonds are broken and new bonds are formed between different atoms |
chemical properties | describes its "potential" to undergo some chemical change or reaction by virtue of its composition. |
law of conservation of matter | A principle in classical physics stating that the total mass of an isolated system is unchanged by interaction of its parts. |