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8th Topic 3
Term | Definition |
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Matter | anything that has mass and takes up space. |
Substance | a single kind of matter that is pure and has a specific set of properties |
Physical Property | a characteristic of a pure substance that can be observed without changing 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 substance that contains one kind of atom and cannot be broken down into a simpler form |
Molecule | a neutral group of two or more atoms held together by covalent bonds(sharing electrons) |
Compound | a substance made of two or more elements chemically combined in a specific ratio or proportion |
Mixture | two or substances that are together in the same place but whose atoms are not chemically bonded |
Distill | to separate liquids by boiling them |
Mass | a measure of how much matter is in an object |
Volume | the amount of space that matter occupies |
Weight | the measure of the force of gravity acting on an object |
Density | the measure of how much mass of a substance is contained in a given volume |
Convert | to show an equivalent value using a different unit of measurement |
Physical Chang | 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 substances combine or break apart to form new substances |
Conservation | when nothing is lost or gained; to remain constant |