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22 Cards in this Set
- Front
- Back
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ATOM |
the basic unit of a chemical element |
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Nucleus |
the central and most important part of an object, movement, or group, forming the basis for its activity and growth |
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Electron |
a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids |
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element |
each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter. Each element is distinguished by its atomic number, i.e., the number of protons in the nuclei of its atoms |
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Isotope |
each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element. |
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compound |
a thing that is composed of two or more separate elements; a mixture |
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ionic bound |
Ionic bonding is the complete transfer of valence electron(s) between atoms
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ion |
an atom or molecule with a net electric charge due to the loss or gain of one or more electrons |
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covalent bond |
A chemical bond formed by the sharing of one or more electrons, especially pairs of electrons, between atoms.covalent bond in Science Expand |
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molecule |
a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction |
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van der waals forces |
a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction |
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cohesion |
the action or fact of forming a united whole |
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adhesion |
the action or process of adhering to a surface or object |
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mixture |
a combination of different qualities, things, or emotions in which the component elements are individually distinct |
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solution |
a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent) |
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solute |
the minor component in a solution, dissolved in the solvent |
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solvent |
the liquid in which a solute is dissolved to form a solution |
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suspension |
a mixture in which particles are dispersed throughout the bulk of a fluid |
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ph scale |
A pH value is a number from 1 to 14, with 7 as the middle (neutral) point. Values below 7 indicate acidity which increases as the number decreases, 1 being the most acidic. |
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acid |
a chemical substance that neutralizes alkalis, dissolves some metals, and turns litmus red; typically, a corrosive or sour-tasting liquid of this kind |
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base |
Bases turn red litmus paper blue and have a pH greater than 7. |
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buffer |
In chemistry, the components of a solution that can neutralize either an acid or a base and thus maintain a constant pH |
