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Chemistry
Chemistry:Chapters 1-18
Question | Answer |
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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 |