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What's the Matter?
What's the Matter? Unit 1
Term | Definition |
---|---|
matter | Anything that has mass and takes up space |
atom | The smallest particle of an element |
element | A pure substance that cannot be broken down into any other substances; made up of only one type of atom |
molecule | Created when two or more atoms join together. |
molecule | can be made up of two or more atoms of the same element (like Hydrogen gas = 2 atoms of Hydrogen) |
molecule | two or more atoms of different elements joining together (like water = 2 atoms of Hydrogen and 1 atom of Oxygen) |
compound | two or more atoms of different elements joining together (like water = 2 atoms of Hydrogen and 1 atom of Oxygen) |
expand | To get larger in size, volume or quantity; when atoms gain heat energy, they move faster and spread out |
particles | A very small piece of a part, a tiny portion or speck |
thermal energy | Heat energy; the motion of molecules in a substance |
vibrate | A rapid, back and forth motion |
solid | Particles are closely packed together and vibrate in place; has definite shape and volume |
liquid | Particles touch each other and are packed loosely together; has definite volume but NOT definite shape – take the shape of container |
gas | has NO definite volume or shape – take the shape of container when closed; spread out indefinitely when container is not closed; low density |
density | how much mass is present per given volume |
density | mass/volume |
solution | groups of molecules that are mixed up in even distributions |
solute | a substance(usually a solid) that is dissolved into another substance |
solvent | a substance(usually a liquid) that does the dissolving in a solution |
solubility | The ability of one substance to dissolve in another substance |