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Grade 5 Unit B Ch 1
Scott Foresman Unit B Ch 1 Vocabulary
Term | Definition |
---|---|
Atom | The smallest particle of an element that has the properties of the element. |
chemical change | a change that produces new substances with new properties. |
chemical property | describes the way a substance reacts with other substances. |
chemical reaction | a process that produces one or more substances that are different from the original substances. |
compound | a substance made up of atoms of more than one element. |
electron | particle in an atom that has a negative electrical charge. |
element | a substance that cannot be broken down into other substances by heat, light, or electricity. |
mixture | two or more substances that are mixed together but can be separated out because their atoms are not combined. |
molecule | two or more atoms joined together; the smallest unit of many substances. |
neutron | Particle in an atom that has no charge. |
nucleus | the center of an atom, where protons and neutrons are located. |
Periodic Table | a chart that classifies elements by their properties. |
physical change | a change in one or more physical properties. |
physical property | a way of describing an object using traits that can be observed or measured without changing the substance into something else. |
proton | particle in an atom that has a positive electrical charge. |
solution | a mixture in which a substance breaks up into its most basic particles, which are too small to be seen, and spreads evenly through another substance. |