| Term | Definition |
|---|
| atom | basic unit of matter |
| nucleus | protons and neutrons together |
| electron | negatively charged particle |
| element | pure substance that consists entirely of one type of atom |
| isotopes | atoms of the same element that differ in the number of neutrons |
| compound | substance formed by the chemical combination of two or more elements |
| ionic bond | a chemical bond in which one atom loses an electron to form a positive ion and the other atom gains to electron to form a negative ion |
| ions | charged particles that form during chemical changes when one or more valence electrons transfer from one atom to another |
| covalent bond | A bond whose electrons are shared between atoms |
| molecule | (physics and chemistry) the simplest structural unit of an element or compound |
| van der Waals forces | when molecules are close together, a slight attraction can develop between the oppositely charged regions of attraction (van der Waals forces) |
| cohesion | (physics) the intermolecular force that holds together the molecules in a solid or liquid |
| adhesion | the property of sticking together (as of glue and wood) or the joining of surfaces of different composition |
| mixture | (chemistry) a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding) |
| solute | the dissolved substance in a solution |
| suspensions | mixture of water and nondissolved material |
| pH scale | (chemistry) p(otential of) H(ydrogen) |
| acid | any compound that forms H ions in solution |
| base | a compound that produces hydroxide ions in a solution |
| buffers | weak acids or bases that can react with strong acids or bases |
Combine with other sets
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