What's the Matter?
Matter is made of up these
What are Atoms
The center of an atom
What is the nucleus
A kind of element that conducts heat and electricity well
What is a metal
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2 significant figures
A substance that contains different compounds and/or elements
What is a mixture
Atoms bond together to form these larger units
Every atom's nucleus contains at least one of these
The method of organizing elements by their atomic number
What is the periodic table
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1
A substance that contains only one element or compound
What is a pure substance
Matter exists in these three states
A negatively charged subatomic particle
What is an electron
All atoms of the same element have this in common
0.0405
3
The two classifications of compounds
What are ionic and covalent
The theory that states the matter cannot be created or destroyed; it can only change forms
What is the Law of Mass Conservation
Represents the amount of protons in an atom on the periodic table
What is the atomic number
A substance formed from the atoms of two or more elements
What is a compound
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8
Compounds that contain at least one metal atom and at least one nonmetal atom, and can conduct electricity
Two ways that matter can change
What are physical and chemical changes
Atoms with the same number of protons and electrons, but a different number of neutrons
What are Isotopes
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4
A mixture with a composition that is always the same no matter what part of the sample you are observing
What is a homogeneous mixture