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| Anything that occupies space and has mass |
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| Amount of matter in an object. |
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| Substances that cannot be broken down chemically into simpler kinds of matter. |
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| Simplest particle of an element that retains all the properties of that element. Example Hydrogen, Oxygen |
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| Central region of an atom that consists of protons and neutrons. |
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| A positively charge subatomic particle that is found in the nucleus of an atom. |
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| Number of protons found in the nucleus of an atom. |
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| Number of protons and neutrons found in the nucleus of an atom. |
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| Subatomic negative particle found outside the nucleus of an atom in orbitals. |
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| Subatomic particle found in the nucleus of an atom that has no charge. |
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| Three-D region around a nucleus that indicates the probable location of an electron. |
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| Atoms of the same element that have a different number of neutrons. |
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| Atoms of two or more elements in fixed proportions. |
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| Attractive forces that hold atoms together. |
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| When two atoms share one or more pairs of electrons. Between non-metals and non-metals. |
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| Simplest part of a substance that retains all of the properties of that substance and can exist in a free state. |
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| An atom or molecule with an electrical charge. |
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| Transfer of atoms between elements. Metals with non-metals. |
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| One or more substances change to produce one or more different substances. |
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| Located in the right-hand side of a chemical equation. It is the substances that react with each other to form new substances. |
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| In an chemical equation, it located on the left-hand side of the equation. It is what is made because two or more chemical reacted. |
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| All of the chemical reactions that occur in an organism. |
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| Energy needed to kick-start a reaction. |
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| Chemical substances that reduce the amount of activation energy needed for a chemical reaction to take place. |
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| A protein or RNA molecule that speeds up metabolic reactions without being permanently changed or destroyed. |
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| Oxidation reduction reaction |
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Definition
| Also known as a redox reaction. In reactions where electrons are transferred between atoms. |
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Definition
| Where a reactant loses one or more elections and become positively charged. |
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| Where a reactant gains one or more electrons and becomes more negatively charged. |
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| In a neutrally charged molecule, it is where there is a charge that unevenly distributed and element and hydrogen such as water. |
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| Force of attraction between a hydrogen molecules with a partial positive charge and another atome or molecule with a partial or full negative charge. |
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| Attractive force that holds molecules of a single substance together. |
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| Attractive force between two particles of different substances. |
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| Attraction between molecules that results in the rise of the surface of a liquid when in contact with a solid. |
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| Four properties of water include: |
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Definition
| Cohesion, Adhesion, High heat capacity and Solvent. |
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Definition
| A scale used to compare the H+ ions to the OH- ions. |
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0-7 on the pH scale
H+ ions |
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7-14 on the pH scale
OH- ions |
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| Chemical substances that neutralize small amounts of either an acid or a base added to a solution. |
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