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Chemical Reactions
Amplify Unit 6 Chemical Reactions
| Term | Definition |
|---|---|
| atom | the smallest unit of an element |
| chemical change | a change that occurs when one or more substances change into an entirely new substance with different properties |
| compound | a substance made of two or more elements |
| density | the ratio of the mass of a substance to its volume |
| electron | a negatively charged subatomic particle orbiting the nucleus |
| electron cloud | the area around the nucleus where electrons quickly orbit |
| element | a pure substance that cannot be separated or broken down into simper substances |
| matter | anything that has mass and takes up space |
| molecule | a group of atoms bonded together |
| neutron | a subatomic particle in the nucleus that has a neutral charge |
| periodic table of the elements | a chart showing the arrangement of elements based on a repeating pattern of their chemical properties |
| physical change | a change of matter from one form to another without a change in chemical properties |
| product | an ending substance that is made during a chemical reaction |
| property | something that can be observed about a substance such as color, smell, or boiling point |
| proton | a positively charged subatomic particle in the nucleus of an atom |
| reactant | a starting substance that is part of a chemical reaction |
| rearrange | to change the order or position of something |
| scale | the relative size of things |
| substance | something that is made of all the same atoms or group of atoms |
| volume | the amount of space an object takes up |
| physical property | a characteristic of a substance that does not involve a chemical change |
| chemical property | a property of matter that describes its ability to participate in chemical reactions |
| metal | an element that is shiny and conducts heat and electricity well |
| nonmetal | an element that does not conduct heat or electricity well |
| metalloid | an element that has properties of both metals and nonmetals |
| condensation | the change in state when a gas becomes a liquid |
| deposition | the change in state when a gas becomes a solid |
| melting | the change in state when a solid becomes a liquid |
| sublimation | the change in state when a solid becomes a gas |
| gas | The state of matter that does not have a definite volume or shape |
| mass | the amount of matter in an object or substance |
| freezing | the change in state when a liquid becomes a solid. |
| weight | the amount of gravitational force exerted on an object |
Created by:
csimpson
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