Chemistry Crossword

3. The force of attraction between two similar or different atoms in a molecule.
6. _______ energy stored in the nucleus of certain heavy metals such uranium or plutonium.
7. The sub-atomic particle which has positive charge.
9. An element is termed as __________ if it can exist independently as a single atom.
11. A Pure Substance a ________ set of properties.
13. The type of mixture in which different constituents are mixed uniformly.
14. The number of electrons in an atom of Sodium(Na).
17. Calcium atom has ____ shell(s).
19. The method of separation the components of a solid-solid mixture in which one solid does not pass through liquid state when heated.
20. The insoluble solid material which settles down when a suspension is allowed to stand undisturbed during sedimentation.

1. A substance which does not take part in a chemical reaction, but changes the rate of the reaction.
2. The clear liquid obtained from a mixture of an insoluble solid and a liquid by the process of filtration.
4. If the electrons are accepted by an atom of an element, to have electronic configuration of the nearest noble gas, the valency is said to be _______________.
5. An Isotope of Hydrogen which 1 neutron.
8. The electrons in the outermost shell of an atom.
10. CO stands for Carbon _________.
12. The phenomenon due to which certain elements emit highly penetrating radiations spontaneously.
15. The outermost shell of an atom cannot have more than _____ electrons.
16. A Nitrogen atoms requires 3 _________ to form a Nitride ion.
18. Co-60 is a Radio-Isotope of the element ______.