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Grade 5 Unit B Ch 1

Scott Foresman Unit B Ch 1 Vocabulary

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.
Created by: DawnSimpson