Crossword

3. Negatively charged formed by gaining electrons
5. A chemical reaction with absorption of heat energy
7. Fusion The Energy released by fusing nuclei of every light element under extremely high temperature and pressure
8. Mixture with various constituents without getting mixed uniformly
11. Fission The process obtaining nuclear energy by splitting the nucleus by slowly moving electrons
14. positively charged ions formed by losing 1,2 or 3 electrons
16. The path in which electrons revolve around the nucleus in fixed path
17. A negatively charged subatomic particle that orbits the nucleus of an atom.
18. An electrically charged particle formed by the loss or gain of electrons
19. the atom of same element having same atomic no. but different mass no.s
20. A chemical reaction with release of heat energy

1. A subatomic particle that has no electric charge, present in the nucleus of an atom and has mass equal to an hydrogen atom
2. A group of atoms having some electric charge which can retain its identity in series of chemical reaction
4. New substance formed as a result of chemical reaction
6. A substance formed by mixing two substances
8. Mixture with different constituents mixed uniformly
9. A positively charged subatomic present in the nucleus and has mass equal to an atom of hydrogen
10. The substance/substances taking part in chemical reaction
12. A pure substance composed of two or more elements combined chemically in a fixed proportion and can be separated by chemical means only
13. Represents short form of an element
15. A pure substance which cannot be broken into two or more substances by any physical and chemical means