Random Chemistry; Chapter 1
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30 terms
Terms | Definitions |
|---|---|
 Mass | how heavy an object is; not the weight |
| Slugs | Mass is measured in ________ |
| Matter | Mass AND volume; how heavy an object is and how much space it takes up |
| Homogeneous | A mixture that is uniform in composition and can't be separated; a solution |
| Heterogeneous | A mixture that can be separated; not uniform |
| Physical | Chemistry is a ________ science |
| Organic | the study of carbon compounds |
| inorganic | study of compounds that don't contain carbon |
| physical | study of properties and changes of matter and relation to energy |
| analytical | the study of identifying composition of materials |
| biochemistry | the study of substances and processes in living things |
| theoretical | uses math and computers to understand chemical behavior |
| atom | smallest unit of an element that maintains the properties of that element |
| Element | a pure substance made of only one kind of atom |
| compound | a substance that is amde from the atoms of two or more elements that are chemically bonded |
| extensive properties | depends on the amount of matter that is present (volume, mass, the amount of energy) |
| intensive properties | does not depend on the amount of matter present (the melting point, boiling point, density, and ability to conduct electricity and heat) |
| physical property | a characteristic that can be observed or measured without changing the identity of the substance |
| Physical Change | change in a substance that does not involve a change in the identity of the substance |
| chemical property | relates to a substance's ability to undergo changes that transform it into different substances |
| chemical change | a change in which one or more substances are converted into different substances |
| metals | can conduct heat & electricity, are malleable, ductile, and have strong tensile strength |
| nonmetals | can't conduct heat & electricity, mostly gases at room temperature |
| metalloids | the "stair step;" has characteristics of metals and nonmetals, semiconductors of electricity |
| noble gases | "Group 18;" Generally unreactive |
| quantitative data | numerical data |
| qualitative data | descriptive data |
| Direct | relationship when both the 'x' function and the 'y' function increase/decrease; the slope line is straight |
| indirect | relationship when one function increases, the other function decreases; the slope line will not be a straight line; it will curve, called the hyperbole |
| A | you will get an _____ on this test! |
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