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Chemistry

Chemistry:Chapters 1-18

QuestionAnswer
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
Created by: LTC