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Chapter 2 and 3
Term | Definition |
---|---|
Matter | anything that occupies space and mass |
Mass | the quality of matter an object has |
Elements | substances that cannot be broken don chemically into simpler kinds of matter |
Atom | the simplest particle of an element that retains all of the properties of that element |
Nucleus | the central rejoin that makes up the bulk of the mass of the atom and consistences of two kinds of subatomic particles |
Proton | a positively charged subatomic particle |
Atomic Number | a negatively charged subatomic particle |
Mass Number | equal to the total number of protons and neutrons of the atom |
Electrons | ..... |
Orbital | a three-dimensional region around a nucleus that indicates the probable location of an electron |
Isotopes | atoms of the same element that have a different number of neutrons |
Compounds | made up of atoms of two or more elements in fixed proportions |
Chemical bonds | the attractive forces that hold atoms together |
Covenant bond | forms when two atoms share one or more pairs of electrons |
Molecole | the simplest part of a substance that retains all of the properties of that substance and can exist in a free state |
Ion | an atom or molecloe with an electronic charges |
Ionic Bonds |