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15 Cards in this Set

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Atom
the smallest particle of an element; the building blocks of matter.
Electron
negatively charged particle found outside the nucleus of an atom
Neutron
located in the nucleus of an atom, has a neutral charge
Nucleus
center of an atom, made up of protons and neutrons held together by a strong force
Proton
positively charged particle located in the nucleus of an atom
Mass
amount of matter found in something; measured in grams
Chemical bond
a force that holds two atoms together.
Chemical change
a change in the identity of a substance because of the chemical properties of that substance.
Chemical property
any characteristic that gives a substance the ability to be changed into a new substance.
Chemical reaction
when a change results from mixing two or more materials. A reaction results in new materials.
Element
a substance that cannot be broken down into other substances by chemical or physical means
Matter
anything that has mass and occupies space
Substance
a single kind of matter that has distinct physical and chemical properties.
Physical change
a change in the physical properties but not in its identity.
Physical property
any characteristic of a material that can be seen or measured without changing the identity of the material