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Chem terms
| Question | Answer |
|---|---|
| Chemistry | scientific study of matter, structure, composition, properties, and transformations (reactions) |
| Law | statement that summarizes a vast number of experimental observations, and describes or predicts some aspect of the natural world |
| Theories | well supported explanations that are widely accepted however may still be proven to be false |
| Scientific method | path of discovery that leads from question and observation to law or hypothesis to theory, combined with experimental verification of the hypothesis and any necessary modification of the theory |
| Macroscopic domain | realm of everyday things that are large enough to sense directly by human sight and touch |
| Microscopic domain | realm of things that are much too small to be sensed directly |
| Symbolic domain | specialized language used to represent components of the macroscopic and microscopic domains, such as chemical symbols, chemical formulas, chemical equations, graphs, drawings, and calculations |
| Matter | anything that occupies space that has mass |
| Solid | state of matter that is rigid, has definite shape, and has fairly constant volume |
| Liquid | state of matter that has a definite volume but indefinite shape |
| Gas | state in which matter has neither definite volume nor shape |
| Plasma | gaseous state of matter containing a large number of electrically charged atoms and/or molecules |
| Mass | fundamental property indicating amount of matter |
| Weight | force that gravity exerts on an object |
| Law of Conservation of Matter | when matter converts from one type to another of changed form, there is no detectable change in the total amount of matter present |
| Pure substance | homogeneous substance that has a constant composition |
| Elements | substance that is composed of a single type of atom; a substance that cannot be decomposed by a chemical change |
| Compounds | pure substances that can be decomposed into 2 or more elements |
| Mixture | matter that can be separated into its components by physical means |
| Heterogeneous mixture | combination of substances with a composition that varies from point to point |
| Homogeneous mixture & solution | combination of substances with a composition that is uniform throughout |
| Atom | smallest particle of an element that can enter into a chemical combination |
| Molecule | bonded collection of two or more atoms of the same or different elements |
| Physical property | characteristic of matter that is not associated with any change in its chemical composition |
| Physical change | change in the state or properties of matter that does not involve a change in its chemical composition |
| Chemical property | behavior that is related to the change of one kind of matter into another kind of matter |
| Chemical change | change producing a different kind of matter from the original kind of matter |
| Extensive property | property of a substance that depends of the amount of the substance |
| Intensive property | property of a substance that is independent of the amount of the substance |
| Units | standard of comparison for measurements |
| International System of Units (SI units) | standards fixed by international agreement in the international system of units |
| Length | measure of one dimension of an object |
| Meter | standard metric and SI unit of length; 1 m = approx 1.094 yards |
| Kilogram | standard unit of SI mass |
| Kelvin | SI unit of temp; 273.15 K= 0 C |
| Celcius | unit of temp; water freezes at 0 c and boils at 100 c on this scale |
| Second | SI unit of time |
| Cubic meter | SI unit of volume |
| Liter | |
| Chemistry | scientific study of matter, structure, composition, properties, and transformations (reactions) |
| Law | statement that summarizes a vast number of experimental observations, and describes or predicts some aspect of the natural world |
| Theories | well supported explanations that are widely accepted however may still be proven to be false |
| Scientific method | path of discovery that leads from question and observation to law or hypothesis to theory, combined with experimental verification of the hypothesis and any necessary modification of the theory |
| Macroscopic domain | realm of everyday things that are large enough to sense directly by human sight and touch |
| Microscopic domain | realm of things that are much too small to be sensed directly |
| Symbolic domain | specialized language used to represent components of the macroscopic and microscopic domains, such as chemical symbols, chemical formulas, chemical equations, graphs, drawings, and calculations |
| Matter | anything that occupies space that has mass |
| Solid | state of matter that is rigid, has definite shape, and has fairly constant volume |
| Liquid | state of matter that has a definite volume but indefinite shape |
| Gas | state in which matter has neither definite volume nor shape |
| Plasma | gaseous state of matter containing a large number of electrically charged atoms and/or molecules |
| Mass | fundamental property indicating amount of matter |
| Weight | force that gravity exerts on an object |
| Law of Conservation of Matter | when matter converts from one type to another of changed form, there is no detectable change in the total amount of matter present |
| Pure substance | homogeneous substance that has a constant composition |
| Elements | substance that is composed of a single type of atom; a substance that cannot be decomposed by a chemical change |
| Compounds | pure substances that can be decomposed into 2 or more elements |
| Mixture | matter that can be separated into its components by physical means |
| Heterogeneous mixture | combination of substances with a composition that varies from point to point |
| Homogeneous mixture & solution | combination of substances with a composition that is uniform throughout |
| Atom | smallest particle of an element that can enter into a chemical combination |
| Molecule | bonded collection of two or more atoms of the same or different elements |
| Physical property | characteristic of matter that is not associated with any change in its chemical composition |
| Physical change | change in the state or properties of matter that does not involve a change in its chemical composition |
| Chemical property | behavior that is related to the change of one kind of matter into another kind of matter |
| Chemical change | change producing a different kind of matter from the original kind of matter |
| Extensive property | property of a substance that depends of the amount of the substance |
| Intensive property | property of a substance that is independent of the amount of the substance |
| Units | standard of comparison for measurements |
| International System of Units (SI units) | standards fixed by international agreement in the international system of units |
| Length | measure of one dimension of an object |
| Meter | standard metric and SI unit of length; 1 m = approx 1.094 yards |
| Kilogram | standard unit of SI mass |
| Kelvin | SI unit of temp; 273.15 K= 0 C |
| Celcius | unit of temp; water freezes at 0 c and boils at 100 c on this scale |
| Second | SI unit of time |
| Cubic meter | SI unit of volume |
| Liter | |
| Chemistry | scientific study of matter, structure, composition, properties, and transformations (reactions) |
| Law | statement that summarizes a vast number of experimental observations, and describes or predicts some aspect of the natural world |
| Theories | well supported explanations that are widely accepted however may still be proven to be false |
| Scientific method | path of discovery that leads from question and observation to law or hypothesis to theory, combined with experimental verification of the hypothesis and any necessary modification of the theory |
| Macroscopic domain | realm of everyday things that are large enough to sense directly by human sight and touch |
| Microscopic domain | realm of things that are much too small to be sensed directly |
| Symbolic domain | specialized language used to represent components of the macroscopic and microscopic domains, such as chemical symbols, chemical formulas, chemical equations, graphs, drawings, and calculations |
| Matter | anything that occupies space that has mass |
| Solid | state of matter that is rigid, has definite shape, and has fairly constant volume |
| Liquid | state of matter that has a definite volume but indefinite shape |
| Gas | state in which matter has neither definite volume nor shape |
| Plasma | gaseous state of matter containing a large number of electrically charged atoms and/or molecules |
| Mass | fundamental property indicating amount of matter |
| Weight | force that gravity exerts on an object |
| Law of Conservation of Matter | when matter converts from one type to another of changed form, there is no detectable change in the total amount of matter present |
| Pure substance | homogeneous substance that has a constant composition |
| Elements | substance that is composed of a single type of atom; a substance that cannot be decomposed by a chemical change |
| Compounds | pure substances that can be decomposed into 2 or more elements |
| Mixture | matter that can be separated into its components by physical means |
| Heterogeneous mixture | combination of substances with a composition that varies from point to point |
| Homogeneous mixture & solution | combination of substances with a composition that is uniform throughout |
| Atom | smallest particle of an element that can enter into a chemical combination |
| Molecule | bonded collection of two or more atoms of the same or different elements |
| Physical property | characteristic of matter that is not associated with any change in its chemical composition |
| Physical change | change in the state or properties of matter that does not involve a change in its chemical composition |
| Chemical property | behavior that is related to the change of one kind of matter into another kind of matter |
| Chemical change | change producing a different kind of matter from the original kind of matter |
| Extensive property | property of a substance that depends of the amount of the substance |
| Intensive property | property of a substance that is independent of the amount of the substance |
| Units | standard of comparison for measurements |
| International System of Units (SI units) | standards fixed by international agreement in the international system of units |
| Length | measure of one dimension of an object |
| Meter | standard metric and SI unit of length; 1 m = approx 1.094 yards |
| Kilogram | standard unit of SI mass |
| Kelvin | SI unit of temp; 273.15 K= 0 C |
| Celcius | unit of temp; water freezes at 0 c and boils at 100 c on this scale |
| Second | SI unit of time |
| Cubic meter | SI unit of volume |
| Liter | (also, cubic decimeter) unit of volume; 1 L = 1000 cm^3 |
| Cubic centimeter | volume of a cube with an edge length of exactly 1 cm |
Created by:
daisydo