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E4L Atoms and nuclear reactions

Author: Flavell Chris
Description:
Keywords: , , , , , , online teaching

Content:
Definitions:
0. Alpha
1. Neutron
2. Nuclear fusion
3. Electron
4. Isotope
5. 2.8.8.1
6. Radioactive
7. Group
8. 2.8.18.7
9. Half life
10. Beta
11. Nucleus
12. Ion
13. Period
14. Proton
15. 2.8.18.32

Answers:
0. The electron structure of Br
1. Negative charge with almost zero mass
2. Discovered by the rutherford geiger marsden experiment
3. Two nuclei join together to form a heavier nucleus
4. Charged particle made by loss or gain of electrons
5. Positively charged particle
6. Elements placed here based on no. of outer electrons
7. The max numbers of electrons in shells 1-4
8. Its nature is an electron
9. The electron structure of K
10. Time taken - half radioactive substance - decay by half
11. Has an atomic (proton) no. of 0 but a mass of 1
12. Made of a helium nucleus (2p %2b 2n)
13. Elements placed here based on no. of e- shells
14. This is the feature that causes nuclei to decay
15. Atom with same atomic number but different mass number
.