chapter 2 Word Scramble
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Question | Answer |
matter | the substance or substances of which any physical object consists or is composed |
pure substance | A sample of matter, either an element or a compound, that consists of only one component with definite physical and chemical properties and a definite composition |
element | one of a class of substances that cannot be separated into simpler substances by chemical means. See also chart under periodic table |
compound | composed of two or more parts, elements, or ingredients |
mixture | an aggregate of two or more substances that are not chemically united and that exist in no fixed proportion to each other |
homogeneous solution | one substance is dissolved in another |
heterogenous solution | A heterogeneous mixture would be: salt with sugar (no water), water with gasoline or oil, salt with sand |
distillation | the volatilization or evaporation and subsequent condensation of a liquid, as when water is boiled in a retort and the steam is condensed in a cool receiver |
physical changes | something that you can physicaly change |
physical properties | can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter. |
chemical properties | of matter describes its "potential" to undergo some chemical change or reaction by virtue of its composition. What elements, electrons, and bonding are present to give the potential for chemical change. |
chemical changes | something that can only be changed chemicaly |
Law of Conservation of Matter | a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system |
Created by:
kcoons
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