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Matter Vocabulary

6th grade terms & definitions

element a pure substance where all of the atoms are the same (found on the Periodic table
subatomic particle particles that are smaller than an atom and make up an atom (protons, neutrons, electrons)
proton subatomic particle with a positive charge
neutron subatomic particle with a neutral charge
electron subatomic particle with a negative charge
matter anything that has mass and volume
atom the smallest unit of matter
atomic number the number of protons in the nucleus of an atom
atomic mass the number of protons AND neutrons in the nucleus of an atom
mixture two or more pieces of matter that can be mixed together and separated
solution two or more pieces of matter that can be mixed together, but are not easily seperated
compound made up of two or more different kinds of atoms
physical change no new substance is created
chemical change a new substance is created
water displacement method the method used to measure the volume of an irregularly shaped volume (watch how much the water rises)
mass the amount of matter in an object
volume the amount of space an object takes up
density Mass/Volume -how much matter an object contains in a given amount of space
metric system based on the number 10, and this is the system that is used by scientists all over the world
solids definite shape and definite volume
liquids no definite shape, but has a definite volume
gases no definite shape or volume
boiling a liquid turns to a gas
melting a solid turns to a liquid
freezing a liquid turns to a solid
Created by: WhiteKnight10