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SHS (Zielke) Science 9 - Atoms & Elements > AE - Chapter 5 Vocabulary > Flashcards

AE - Chapter 5 Vocabulary Flashcards

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1
Q

Alkali Metals

A

Elements found in Group 1 of the periodic table of elements; these metals have low melting points and react easily with water and air (Pg. 183)

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2
Q

Alloy

A

A solution of two or more metals (Pg. 159)

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3
Q

Atom

A

The smallest unit of an element that has all the element’s properties (Pg. 151)

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4
Q

Atomic Mass

A

The average mass of an element’s atoms (Pg. 181)

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5
Q

Atomic Theory

A

The theory that explains the nature of matter; study of the nature of atoms and how they combine to form all types of matter (Pg. 151)

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6
Q

Atomic Mass Unit

A

A unit of measure used to measure an atom’s mass (Pg. 181)

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7
Q

Atomic Number

A

The number of protons in an atom of an element (Pg. 180)

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8
Q

Bond

A

The attraction between atoms or ions (Pg. 170)

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9
Q

Chemical Formula

A

A formula that identifies which elements, and how many atoms or ions of each, are in a compound (Pg. 172)

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10
Q

Covalent Bond

A

The attraction between atoms created by the sharing of a pair of electrons between atoms (Pg. 171)

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11
Q

Electron

A

A negatively charged particle in an atom, located outside the nucleus of an atom (Pg. 152, 207)

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12
Q

Group (Chemical Family)

A

One of 18 vertical columns in the periodic table of elements; classification of elements with certain shared physical and chemical properties; also knows as a chemical family (Pg. 182)

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13
Q

Halogens

A

Elements found in Group 17 of the periodic table of elements; these non-metals are all very reactive (Pg. 183)

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14
Q

Ion

A

An atom or group of atoms that has an electric charge as the result of losing or gaining electrons (Pg. 170)

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15
Q

Ion Charge

A

An electric charge that an atom or group of joined atoms takes on when it loses or gains electrons (Pg. 181)

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16
Q

Ionic Bond

A

The attraction between ions of opposite charges; ex: bond in an ionic compound (Pg. 170)

17
Q

Ionic Compound

A

A pure substance formed when at least one metal and one non-metal combine chemically (Pg. 169)

18
Q

Law

A

A generalized description of some aspect of the physical world under certain conditions (Pg. 149)

19
Q

Metalloids

A

Elements with metallic and non-metallic properties ex: silicon (Pg. 160)

20
Q

Metals

A

Elements that are malleable and ductile, and conduct electricity and hear; most elements are metals (Pg. 159)

21
Q

Molecular Compound

A

A pure substance formed when non-metals combine chemically (Pg. 171)

22
Q

Molecule

A

A group of atoms that share electrons; molecular compounds contain molecules (Pg. 171)

23
Q

Neutral

A

The property of having no overall electric charge; both the positive and negative charges are equal (Pg. 170)

24
Q

Neutron

A

A neutral particle in an atom, located in the nucleus of the atom (Pg. 153, 207)

25
Q

Noble Gases

A

Elements found in Group 18 of the periodic table of elements; these gases are not chemically relative except in certain special conditions (Pg. 184)

26
Q

Non-metals

A

Elements that do not resemble metals; non-metals are brittle and generally do not conduct electricity or heat (Pg. 160)

27
Q

Nucleus

A

The center of an atom where all of the atom’s positive charge and most of an atom’s mass are concentrated (Pg. 153, 207)

28
Q

Period

A

One of seven horizontal rows in their periodic table of elements (Pg. 182)

29
Q

Periodic Table of Elements

A

A chart that organizes all of the elements in rows and columns; also called periodic table (Pg. 180)

30
Q

Proton

A

A positively charged particle in an atom, located in the nucleus of the atom (Pg. 153, 207)

31
Q

Relative Mass

A

The mass of an object in comparison to the mass of another object (Pg. 154)

32
Q

Subatomic Particle

A

A particle that makes up an atom; includes protons, neutrons, and electrons (Pg. 154)

33
Q

Theory

A

A generalized explanation of a set of related observations or events supported by research and good arguments (Pg. 149)

SHS (Zielke) Science 9 - Atoms & Elements (2 decks)

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