click below
click below
Normal Size Small Size show me how
Unit 1 Lesson 1-6
Matter
Term | Definition |
---|---|
Matter | Anything that has mass and takes up space |
Mass | Amount of matter in an object |
Weight | Measure of the gravitational force of an object |
Volume | Amount of space an object takes up |
Density | Measure of the amount of mass in a given volume |
Physical Property | Characteristic of a substance that can be observed and measured without changing the identity of the substance |
Chemical Property | Substances ability to change into a new substance with different properties |
Physical Change | Change that effects one or more physical properties of a substance |
Chemical Change | Occurs when one or more substances change into entirely new substances with different properties |
Law of Conversation Matter | States that in ordinary chemical and physical changes, mass is not created or destroyed but is only transformed into different substances |
Atom | 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 | Pure substance is a substance that has definite physical and chemical properties such as appearance, melting point, and reactivity |
Heterogeneous | Mixture is one that does not have a uniform compsition |
Homogeneous | Substances are spread |
Solid | Substance that has a definite volume and shape |
Liquid | Definite volume but not shape |
Gas | No definite volume or shape |
Freezing | When a liquid becomes solid |
Melting | Solid to a liquid |
Evaporating | Liquid to gas |
Boiling | Liquid to gas rapidly |
Condensation | Gas to liquid |
Sublimation | Solid directly to a gas |
Deposition | Change in state from a gas directly to a solid |