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Chemistry
Chemistry:Chapters 1-18
| Question | Answer |
|---|---|
| Is the branch of science that deals with the study of the composition, structure, and properties of matter and the changes that matter undergoes. | Chemistry |
| Foundational to the other areas of chemistry, deals with applying the theories of physics to the study of reactions and properties of matter. | Physical Chemistry |
| Study of substances that are compounds of carbon. | Organic Chemistry |
| Generally deals with substances that are chemical combinations of elements other than carbon. | Inorganic Chemistry |
| Chemistry of living things. | Biochemistry |
| Deals with identifying what substances are present in materials and how much of each substance is present. | Analytical Chemistry |
| The consistency or reproducibility of measurement and is closely related to a measurement's uncertainty. | Precision |
| Has to do with how close a measurement is to the actual, exact value. | Accuracy |
| They have no uncertainty, values obtained by counting or set definition. | Exact Numbers |
| Is a collection of compatible, related units that can be used to measure various quantities. | System of Measurement |
| Is used worldwide as the standard system of measurement. | Metric System |
| The quantity of matter in an object. | Mass |
| The force of gravity upon an object. | Weight |
| The ratio of a substances mass to its volume. | Density |
| The smallest particles. | Atoms |
| Can't be broken down into simpler substances by ordinary chemical means. | Elements |
| Groups of two or more atoms that are all linked by chemical bonds to form distinct units. | Molecules |
| A substance that can be decomposed by chemical means into simpler substances. | Compound |
| A substance consisting of two or more pure substances that are physically mixed but not chemically combined. | Mixture |
| Mixture consists of pure substances that are incompletely mixed. | Heterogeneous |
| A homogeneous part of a system that is in contact with but physically distinct from other parts of the system. | Phase |
| Homogeneous mixtures in liquid form may be separated. | Distillation |
| Complex mixtures can be separated by this technique. | Chromatography |
| The number of protons in the nucleus is the atom's. | Atomic Number |
| The sum of the number of neutrons in the nucleus. | Mass Number |
| Atoms of the same element that differ in their mass numbers. | Isotopes |
| An ion with more electrons than protons has an excess of negative charge. | Anion |
| An ion with fewer electrons than protons has an excess of positive charge. | Cation |
| The coldest possible temperature | Absolute Zero |
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