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Flashcards in Structures of Matter Deck (15)
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1

Anything that occupies space and has mass

Matter

2

The smallest particle of an element that has the characteristic properties of that element

Atom

3

The smallest subdivision of a substance having the characteristic properties of that substance

Molecule

4

Any material that has a definite constant composition

Substance

5

Most widely held theory of atomic structure is the ________

Bohr atom

6

The number of protons in the nucleus; symbolized by Z

Atomic number

7

The sum of the number of protons and neutrons in the nucleus of the atom; symbolized by A

Mass number

8

Atoms of the same element having different mass numbers

Isotopes

9

Two or more atoms with the same atomic weight (mass #) but with different atomic numbers

Isobars

10

Two or more atoms with the same molecular formula, but different physical and chemical properties

Isomers

11

Two or more atoms with the same number of neutrons but having different number of protons in the nucleus

Isotones

12

The energy required to remove an e- from a particular shell and beyond the range of the nucleus

Binding energy

13

The closer a shell is to the nucleus the ____ the binding energy

Greater

14

The property of elements that is determined by the number of e- in the outer shell

Chemical behavior

15

An atom tends to be chemically stable when its outer shell contains exactly 8 e-

Octet rule