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Laabri

Half Life OALH

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Last updated over 5 years ago
28 Nsɛmmisa

Do Now

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Key Knowledge - LCWC

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Recall Quiz

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I Do

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We Do

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You Do

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2nd I Do

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2nd We Do

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2nd You Do

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3rd I Do

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3rd We Do

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3rd You Do

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Plenary

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Asemmisa {{asɛmmisaAhyɛnsode}}
1.

What happens to the mass number when an alpha particle is released?

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

What happens to the atomic number when an alpha particle is released?

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3.

What happens to the atomic number and the mass number when a beta particle is released?

Asemmisa {{asɛmmisaAhyɛnsode}}
4.

Define the dependent variable

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5.

Give this number to 3 significant figures: 3.7365

Asemmisa {{asɛmmisaAhyɛnsode}}
6.

Give an example showing that gamma radiation has more penetrating power than alpha radiation

Asemmisa {{asɛmmisaAhyɛnsode}}
7.

How is the nature of radioactive decay described?

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8.

What is the half-life of a radioactive isotope?

Asemmisa {{asɛmmisaAhyɛnsode}}
9.

What happens to the half-life of a particular isotope as more and more nuclei decay?

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10.

How is the nature of radioactive decay described?

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11.

What is the half-life of a radioactive isotope?

Asemmisa {{asɛmmisaAhyɛnsode}}
12.

What happens to the half-life of a particular isotope as more and more nuclei decay?

Asemmisa {{asɛmmisaAhyɛnsode}}
13.

1)Give two definitions of the half life of a radioactive isotope

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14.

2)What two words are used to describe the nature of radioactive decay?

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15.

3) How does the half-life for a particular isotope change over time?

Asemmisa {{asɛmmisaAhyɛnsode}}
16.

I do: Use the graph to calculate the half life - we will do this together as part of the lesson.

Asemmisa {{asɛmmisaAhyɛnsode}}
17.

We do: Use the graph to calculate the half life - we will do this together as part of the lesson.

Asemmisa {{asɛmmisaAhyɛnsode}}
18.

You do: 1. Use the graph to calculate the half life

Asemmisa {{asɛmmisaAhyɛnsode}}
19.

You do: 2. Use the graph to calculate the half life

Asemmisa {{asɛmmisaAhyɛnsode}}
20.

I do: Use the table to calculate the half life - we will do this together as part of the lesson

Asemmisa {{asɛmmisaAhyɛnsode}}
21.

We do: Use the table to calculate the half life - we will do this together as part of the lesson

Asemmisa {{asɛmmisaAhyɛnsode}}
22.

You do: Use the table to calculate the half life

Asemmisa {{asɛmmisaAhyɛnsode}}
23.

I do: Calculate the half life of an isotope if its activity falls from 8000 counts per second to 500 counts per second after 10 minutes - we will do this together in class

Asemmisa {{asɛmmisaAhyɛnsode}}
24.

We do: Calculate the half-life of an isotope if its activity falls from 120 counts per minute to 30 counts per minute after 20 hours - we will do this together in class

Asemmisa {{asɛmmisaAhyɛnsode}}
25.

You do: 1. Calculate the half-life of an isotope if its activity falls from 6000 counts per second to 750 counts per second after 6 hours

Asemmisa {{asɛmmisaAhyɛnsode}}
26.

You do: 2. What is half-life of a 500g radioactive sample that decays to 62.5g is 24 hours?

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27.

1)Give two definitions of the half life of a radioactive isotope

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28.

2.Sketch a graph showing radioactive decay