Across
- 3. Protons have a _________ charge
- 4. What sub-atomic particles are arranged in shells?
- 10. In electricity production steam turns a ________ which generates electricity
- 11. Electrons have a _________ charge
- 12. Protons and Neutrons are found in this part of the atom
- 13. Coal boils water and it turns to _______
- 15. This nuclear disaster occurred in 1986 in Russia
- 16. This type of radiation can be stopped by aluminium
Down
- 1. When an alkali metal reacts an electron is ______
- 2. What chemical is used to test for carbon dioxide?
- 5. What gas is released when coal reacts with oxygen?
- 6. A radioactive atom can decay only ________
- 7. Limewater goes from colourless to ______ when CO2 is present.
- 8. How many electrons would be in the outer shell of an atom with 9 electrons in total.
- 9. This type of radiation can be stopped by lead (think hulk)
- 14. This type of radiation can be stopped by paper