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Chemistry of Life

TermDefinition
1. Atom The basic unit of a chemical element.
2. Compound A thing that is composed of two or more separate elements; a mixture.
3. covalent bond A chemical bond formed when electrons are shared between two atoms
4. 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.
5. Element A part or aspect of something abstract, especially one that is essential or characteristic.
6. Ion An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
7. Ionic bond A chemical bond formed between two ions with opposite charges.
8. Isotope Any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weights
9. Molecule The smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.
10. Neutron An elementary particle having no charge, mass slightly greater than that of a proton, and spin of ½: a constituent of the nuclei of all atoms except those of hydrogen.
11. Nucleus A central part about which other parts are grouped or gathered; core:
12. Proton A positively charged elementary particle that is a fundamental constituent of all atomic nuclei.
13. Valence electron An electron of an atom, located in the outermost shell (valence shell) of the atom, that can be transferred to or shared with another atom.
14. Van der waals forces Weak, nonspecific forces between molecules.
Created by: Mariska Tracey
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