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Science > Atoms > Flashcards

Atoms Flashcards

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0
Q

Anion

A

NEGATIVELY charged ion

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1
Q

Electron shell

A

Layer that surrounds nucleus & can hold certain # of electrons

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2
Q

Cation

A

POSITIVELY charged ion

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3
Q

Ionic bond

A

Bond between anions & cations due to electrostatic attraction of their opp charges

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4
Q

Ionic compound

A

Compound made up of anions and cations

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5
Q

Alpha decay

A

Nuclear RXN where nucleus ejects alpha P

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6
Q

Alpha radiation

A

Ionising radiation made up of alpha particles

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7
Q

Beta decay

A

Nuclear reaction where beta P ejected from nucleus & N converts into P increasing atomic # by 1

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8
Q

Beta radiation

A

Nuclear radiation made up of beta particles

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9
Q

Carbon dating

A

Analysing amount of C-14 in fossil to determine age

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10
Q

Electromagnetic radiation

A

Radiation that travels through a vacuum as waves

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11
Q

Gamma decay

A

Nuclear decay that involved release of gamma rays

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12
Q

Gamma rays

A

High-E electromagnetic wave

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13
Q

Gamma radiation

A

Form of ionising radiation made up of gamma rays

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14
Q

Ionising radiation

A

Form of radiation that has ability to ionise atoms & molecules

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15
Q

Mutation

A

R Damages DNA (contains all genetic into) of a cell, causes change to how it works & reproduces, reprograms –> cancer

16
Q

Nuclear decay

A

When nucleus undergoes nuclear RNX & emits radiation

17
Q

Nuclear radiation

A

Rays or particles that emitted by nucleus during nuclear RNX

18
Q

Nuclear reaction

A

Process that causes nucleus to change

19
Q

Radiation burns

A

Redness & blistering on surface of skin or organs cause by short exposure to large amount of ionising R

20
Q

Radiation sickness

A

From large dose of ionising R over long period of time , cell death; nausea, vomiting & fever

21
Q

Radioactive

A

Emitting radiation

22
Q

Radioisotope

A

Isotope with nucleus that may undergo nuclear RNX

23
Q

Transmutation

A

Nuclear RNX process that converts 1 type of atom into diff type

24
Q

Unstable nuclei

A

Nuclei that may undergo nuclear RNX at any moment

25
Q

Fission

A

Nuclear RNX where large nucleus splits into 2 nuclei with similar mass

26
Q

Use of R

A

Sterilisation
Radiotherapy
Tracer
Smoke detector

Science (17 decks)

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