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Chemistry > Atomic Structure and Nuclear Chemistry Vocabulary > Flashcards

Atomic Structure and Nuclear Chemistry Vocabulary Flashcards

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1
Q

Any of the six chemical elements that make up group 1

A

Alkaline Metal

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2
Q

Any of the six chemical elements that compose group 2

A

Alkaline Earth Metal

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3
Q

Consist of a nucleus made of protons and neutrons orbited by electrons

A

Atom

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4
Q

Mass of Atom

A

Atomic Mass

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5
Q

Defined as a mass equal to one twelfth the mass of an atom of carbon

A

Atomic Mass Unit (AMU)

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6
Q

The number of protons in the nucleus of an atom

A

Atomic Number

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7
Q

A stream of electrons emitted from the cathode of a high-vacuum tube.

A

Cathode Ray

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8
Q

First complete attempt to describe all matter in terms of atoms and their properties.

A

Daltons Atomic Theory

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9
Q

Electrons

A

Negative electricity on the Electron shell

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10
Q

A set of chemical elements in the same vertical column of the periodic table

A

Group

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11
Q

Any of the six nonmetallic elements that constitute group 17

A

Halogen

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12
Q

Chemical elements normally shown in the two rows below all the other elements

A

Inner Transition Metal

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13
Q

Atom or molecule that has a net electrical

A

Ion

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14
Q

A given element have the same number of protons but different number of neutrons

A

Isotope Mass Number

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15
Q

An element that readily forms positive ions (cautions) and has metallic bonds

A

Metal

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16
Q

A chemical element which has a properties of Earth and metal and nonmetal

A

Metalloid

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17
Q

Subparticle found in nucleus with no electrical charge

A

Neutrons

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18
Q

Any of the seven chemical elements that make up group 18

A

Noble Gas

19
Q

Element that mostly the characteristics of a metal

A

Non Metal Chemicals

20
Q

A collection of particles called protons and neutrons

A

Nucleus

21
Q

The horizontal rows of the periodic table

A

Periods

22
Q

State that the physical and chemical properties of the elements recur in a systematic and predictable way when the elements are arranged in order of increasing atomic number

A

Periodic Laws

23
Q

All of the elements

A

Periodic Table

24
Q

Positive charge of Atom

A

Protons

25
Q

The main group is the group of elements

A

Representative Elements

26
Q

Any of the set of metallic elements occupying a central block

A

Transition Metal

27
Q

Liquids resistance to flow

A

Viscosity

28
Q

Compresite particles consisting of two protons and two neutrons tightly bound

A

Alpha Particles

29
Q

Alpha particles, also called alpha rays on alpha radiation. Generally produced in the process of alpha decay.

A

Alpha Radiation

30
Q

Is emitted from the nucleus of an atom during radioactive decay

A

Beta Particles

31
Q

High energy electron, carrying on negative charge, that are sent out by some radioactive nuclei.

A

Beta Radiation

32
Q

When an atom splits into two parts, it releases energy

A

Fission

33
Q

Combining lighter atomic nuclei to form a heavier nucleus.

A

Fusion

34
Q

High energy phatom that are emitted by radioactive decay.

A

Gamma Radiation

35
Q

A device used for the detection and measurements of all types of radioation

A

Geiger Counter

36
Q

Time required for a quantity to reduce to half of its initial value

A

Half -Life

37
Q

A Nuclear reaction in which an atomic nucleus and one or are neutrons collide and merge to form a heavier nucleus

A

Neutron Absorption

38
Q

A medium that reduces the speed of fast neutrons

A

Neutron Moderation

39
Q

A positively charged electron

A

Positron

40
Q

Energy that comes from a source and travels through space at the speed of light

A

Radiation

41
Q

Process by which an unstable atomic nucleus loses energy by radiation

A

Radioactive Decay

42
Q

Radioactive substances, or the radiation emitted by these

A

Radioactivity

43
Q

The action of changing or the of being changed to another form

A

Transmutation

Chemistry (4 decks)

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