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Science chemistry


Matter= Occupies space.
Element= A substance controlled by a single kind of atom that can't destroyed into other substances by chemical/physical means.
Periodic table= All known elements.
Atomic number= Protons or electrons in element.
Atomic symbol= A short form of the full element.
Atomic mass= Number of protons and nuetrons.
Compound= A substance of 2 or more elements are chem. joined in a placed ratio.
Mixture= 2 vor more atoms that are mixed together but is'nt chem. joined.
Atom= The smallest part of a chem. which still has the properties of the element.
Nucleus= The middle of the atom that has nuetrons and protons.
Protons= Postive charged,small,in nucleus.
Nuetrons= Nothing charged,small,in nucleus
Electrons= Very small,negitive charged,high energy,moves around nuleus.
Electron shells= Orbits that make the electrons move around necleus.
Molecule= 2 or more atoms together that bonded.
Chemical bonds= 2 or more atoms together that are forced to join.
Created by: 3101988