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E4L Atoms and nuclear reactions

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

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

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