Term 2 Science

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Note on Term 2 Science, created by Jaida B on 05/07/2017.
Jaida B
Note by Jaida B, updated more than 1 year ago
Jaida B
Created by Jaida B over 7 years ago
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Radioactivity Half Life of a radioactive substance – The time taken for an amount of radioactive isotope (radioisotope) to decay to half of its original amount. Example – If I had 100g of Carbon, how long will it take to just have 500g? TIME (YEARS) AMOUNT (g) 10 1000 5700 500 11400 250 Answer = 5700 years OR Types of Radiation: Alpha decay: -formed when there are too many protons and neutrons. -if the element has over 85 protons – it’s alpha decay. Beta decay: -If it has under 20 protons and the number of neutrons, it’s stable. -Otherwise, beta decay is formed. Gamma decay: -Gamma decay accompanies other forms of radiation.

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