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Chapter 3 Vocab

3.1 Notes

TermDefinition
Matter Matter is anything that has mass and takes up space
Elements Elements make up every substance
Metals Metals are good conductors of heat and electricity
Non-Metals and Semimetals Non-Metals are elements that do not conduct heat or electricity very well, Semi-metals are metals that are sometimes like metals and sometimes like non-metals
Atoms The smallest part of an element that still acts like one is an atom, atoms are made up of these particles, Protons, Neutrons, Electrons
Atomic Arrangement Atoms are often connected to other atoms in specific ways, the way the atoms are connected affects the properties of an element
Compounds A type of matter made of two or more elements, changing the number, kind, or position of atoms in a molecule changes it.
Molecule smallest particle of a compound that still acts like that compound
Electron Negative charge , around the neculeus
Proton Postitive charge, in the neculeus
Neutron No charge, in the neculues
Solid Has a definite volume or shape. Particles are very close together, and don’t move past each other. Keeps its shape.
Liquid Has a definite volume but not shape. Particles can move past each other. Takes shape of container
Gas No definite volume or shape. Particles spread out evenly and take shape of container. Can be squeezed into a smaller volume
Plasma Like a gas, but conducts electricity like a metal. Occurs with high temps or electric charge.
Melting Point Solid to liquid or liquid to solid. Same temperature as freezing point.
Evaporation When liquids become a gas
Condesation When gas becomes a liquid. Gas particles touch a cold surface and the temperature drops.
BoilingPoint he temperature at which evaporation occurs
Created by: margot-martin
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