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Definition
| The basic building block of matter; smallest particles of an element with all the characteristics of that element |
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Definition
| Total mass of the protons and neutrons in an atom |
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Term
atomic number [image][image] |
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Definition
| Number equal to the number of protons in the nucleus of an atom |
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Definition
| 1. 100 degrees Celsius or 212 degrees Fahrenheit. 2. Temperature at which a liquid changes into a gas. |
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Definition
| A change that results in new substances being formed through a chemical reaction |
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Definition
| a way of describing the number of atoms that make up one molecule of a compound |
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Definition
| A substance made up of two or more elements chemically joined together into a molecule. |
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Definition
| measurement of how much mass is contained in a given volume of an object |
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Definition
| the process in which particles of substances separate and spread evenly throughout a mixture |
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Definition
| A very tiny particle that moves around the nucleus of the atom in layers called shells. It has a negative electric charge. |
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Definition
| Any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter. |
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Definition
| The temperature at which a liquid becomes a solid. 0 degrees Celsius and 32 degrees Fahrenheit. |
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Definition
| a state or phase of matter in which a substance has no definite shape or volume |
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Definition
| A form of energy. This can be transferred between two systems when a difference of temperature exists. |
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Definition
| A state of matter that has no fixed shape but that has a definite volume. |
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Definition
| Anything that takes up space and has mass. |
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Definition
| temperature at which a solid becomes a liquid |
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Definition
| combination of substances that can be separated by physical means and can be either homogeneous or heterogeneous |
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Term
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Definition
| A combination of two or more atoms. |
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Definition
| a tiny particle in an atom with the weight of a proton and no electrical charge. |
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Term
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Definition
| center of atom , made of protons and neutrons |
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Definition
| A chart that classifies elements by their properties |
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Definition
| a change that affects one or more physical properties of a substance; most physical changes are easy to undo |
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Definition
| (physical chemistry) a fourth state of matter distinct from solid or liquid or gas and present in stars and fusion reactors; a gas becomes a plasma when it is heated until the atoms lose all their electrons, leaving a highly electrified collection of nuclei and free electrons. |
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Term
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Definition
| a particle found in the nucleus of an atom; has a positive charge |
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Term
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Definition
| 1. A state of matter that has a definite shape and a definite volume. 2. one of the states of matter; has a definite shape and volume |
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Definition
| the substance that is dissolved to form a solution |
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Term
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Definition
| This is formed when a chemical dissolves in a liquid. |
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Term
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Definition
| substance in which a solute dissolves |
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Term
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Definition
| physical property of a sample of matter - solid, liquid, gas, or plasma. |
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Definition
| amount of space an object takes up |
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