Unit 1 Lessons 1-6 Word Scramble
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Term | Definition |
matter | anything that has mass and takes up space |
mass | describes the amount of matter in an object |
weight | a measure of the gravitational force on an object |
volume | the amount of space an object occupies |
density | a measure of the amount of mass in a given volume |
physical property | a characteristic of a substance that can be observed and measured without changing the identity of the substance |
chemical property | a substance's ability to change into a new substance with different properties |
physical change | a change that affects one or more physical properties of a substance |
chemical change | one or more substances change into entirely new substances with different properties |
atoms | the smallest unit of an element that maintains the properties of that element |
element | made up of one or more of the same kind of atom chemically combined |
compound | made up of different kinds of atoms chemically combined |
mixture | contains a variety of elements and compounds that are not chemically combined with each other |
pure substance | a substance that has definite physical and chemical properties such as appearance, melting point, and reactivity |
heterogeneous | a mixture that does not have a uniform composition |
homogeneous | a mixture in which substances are evenly spread throughout |
solid | substance that has definite volume and shape |
liquid | has a definite volume but not a definite shape |
gas | does not have a definite volume or shape |
freezing | the change in state in which a liquid becomes a solid |
melting | change of state from a solid to a liquid |
evaporation | particles gain enough energy that they escape from the surface of the liquid and become a gas |
boiling | a rapid change from a liquid to a gas |
condensation | change of state from a gas to a liquid |
sublimation | the change from a solid state directly into a gas |
deposition | the change in state from a gas directly to a solid |
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