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7th Grade: Topic 2

Vocabulary

TermDefinition
Matter Anything that has mass and takes up space.
Substance A single kind of matter that is purse and has a specific set of properties.
Physical Property A characteristic of a pure substance that can be observed without changing it into another substance.
Chemical Property A characteristic of a substance that describes its ability to change into different substances.
Atom The basic particle from which all elements are made; the smallest particle of an element that has the properties of that element.
Element A purse substance that cannot be broken down into other substances by chemical or physical.
Molecule A neutral group of two or more atoms held together by covalent bonds.
Compound A substance made of two or more elements chemically combined in a specific ratio, or proportion.
Mixture Two or more substances that are together in the same place but their atoms are not chemically bonded.
Distill In chemistry, this means separating, similar to separating out extra information.
Mass A measure of how much matter is in an object.
Volume The amount of space that matter occupies.
Weight A measure of the force of gravity acting on an object.
Density The measurement of how much mass of a substance is contained in a given volume.
Convert Changing from one thing to some other specific thing in a predictable way.
Physical Change A change that alters the form or appearance of a material but does not make the material into another substance.
Chemical Change A change in which one or more substance combine or break apart to form new substance.
Concservation Prevention of waste
 



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