Radioactivity 0.0 / 5 ? PhysicsRadioactivityGCSEAQA Created by: emmalouise0219Created on: 29-10-17 10:54 What is ionisation? When a neutral atom loses or gains electrons. 1 of 15 How is a neutral atom positively ionised? By losing electrons. 2 of 15 How is a neutral atom negatively ionised? By gaining electrons. 3 of 15 What two effects on living cells can ionisation have? Kill cells or cause cancer. 4 of 15 Which type of radiation is the most ionising? Alpha radiation. 5 of 15 Which type of radiation is the least ionising? Gamma radiation. 6 of 15 The most penetrating? Gamma radiation. 7 of 15 The least penetrating? Alpha radiation. 8 of 15 Least dangerous outside the body? Alpha radiation. 9 of 15 Most dangerous outside the body? Gamma radiation. 10 of 15 High energy electrons? Beta radiation. 11 of 15 Has a negative charge? Beta radiation. 12 of 15 Is weakly ionising? Beta radiation. 13 of 15 Has zero charge and zero mass? Gamma radiation. 14 of 15 Only reduced in intensity by lead and concrete? Gamma radiation. 15 of 15
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