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Science > Radioactivity > Flashcards

Radioactivity Flashcards

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1
Q

Who discovered Radioactivity

A

Henri becquerel

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2
Q

What are the types of radioactivity decayed

A

Aloha decay
Beta decay
Gamma decay

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3
Q

What is Alpha Decay

A

When Ab atom ejects a helium nucleus (2 protons and 2 neutrons) from its own nucleus

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4
Q

What is beta feta decay

A

Occurs neutron nucleus ruptures and releases a proton and an electron

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5
Q

What is ejected from the beta decay

A

Electron

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6
Q

How much is the atomic weight reduced during Aloha Decay

A

4 times

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7
Q

What is Gamma Radiation

A

High energy waves that are spontaneously given off radioactive atoms

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8
Q

What decay has the most energy and the dangerous

A

Gamma Decay

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9
Q

What can the Gamma Radiation blocked

A

Lead and thick concrete

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10
Q

What can alpha blocked

A

Paper

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11
Q

What can beta be blocked by

A

Wood

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12
Q

What is nuclear Reactions

A

Reactions that occur in the nuclei to atoms that change the nuclei to atoms that change make up and identity of atoms

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13
Q

What are the two types of nuclear reactions

A 
Nuclear fission (splitting)
Nuclear fusion (combining)
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14
Q

What is Nuclear Fission?

A

The splitting of a heavy or large atom into 2 smaller lighter atoms

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15
Q

A single neutrons sets off a nuclear fission reaction neutrons are dispersed trigger what

A

Triggering a fission reaction

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16
Q

What is the nuclear chain reaction

A

The amount of reactions In uranium 235 increases exponentially as a power of 3

17
Q

What are the governments efforts to produce the first nuclear fission bomb?

A

Manhattan Project

18
Q

What is nuclear fusion

A

When two smaller nuclei/ atoms bond together to form a new larger substance

19
Q

Radioactivity

A

The spontaneous emission of radiation by an unstable atomic nucleus (the giving off of energy and or particles from a nucleus)

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