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Bridge to Chemistry
Vocabulary used in our "Bridge to Chemistry" lessons
| Term | Definition |
|---|---|
| Atom | The building block of matter. The smallest unit of an element that maintains the chemical properties of that element. |
| Element | A pure substance that cannot be seperated or broken down into simpler substances. All atoms have the same atomic number. |
| Molecule | A neutral group of atoms that are held together by covalent bonds. |
| Compound | A substance made up of atoms of two or more different elements joined by chemical bonds. |
| Proton | Positively charged particle found in the nucleus of an atom. # of these makes up the atomic # for each element. |
| Neutron | Particle found in the nucleus of an atom with about the same mass as a proton, but without an electric charge. |
| Electron | Negatively charged subatomic particle. |
| Nucleus (of an atom) | Small dense region of an atom containing protons and neutrons. |
| Valence Electron | An electron that is found in the outermost shell of an atom. This determines that atom's chemical properties. |
| Periodic Table | An arrangement of the elements in order of their atomic numbers such that elements with the same properties fall in the same column or group. |
| Chemical Reaction | The process by which one or more substances change to produce one or more different substances. |
| Chemical Reactivity | How readily a substance undergoes a chemical reaction. |
| Reactants | A substance or molecule that participates (goes into) a chemical reaction. |
| Products | A substance that forms (comes out of) a chemical reaction. |
| Physcial Property | A characteristic of a substance that does not involve a chemical change, such as density, color, or hardness. |
| Chemical Property | A property of matter that describes a substance's ability to participate in a chemical reaction. |
| Balanced Chemical Equation | When the number of atoms invloved on the reactant side of an equation is equal to the number of atoms on the product side. |
| Metal | An element that is shiny and that conducts heat and electricity well. |
| Non-Metal | An element that conducts heat and electricity poorly and that does not form positive ions in an electrolytic solution. |
| Metalloid | An element that has properties of BOTH metals and non-metals; sometimes referred to as a semiconductor. |
| Noble Gas | One of the elements found in Group 18 of the periodic table. |
| Atomic Mass | Quanitity of matter found in an element. = total # of protons and neutrons in the atom. |
| Atomic Number | The number of protons in an atom's nucleus. |
Created by:
kpartin
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