CHEMISTRY

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2. A bond formed by the attraction between free-floating electrons and metal ions (8 letters).
3. A state where forward and reverse reactions occur at the same rate (11 letters).
4. The substance in which a solute dissolves to form a solution (7 letters).
7. A high-energy state of matter where electrons are stripped from atoms (6 letters).
9. The minimum energy required for a reaction to occur (16 letters).
11. Atoms of the same element with different numbers of neutrons (7 letters).
13. The number of protons in an atom's nucleus (12 letters).
15. The heat content of a system (8 letters).
16. A symbolic representation of a chemical reaction (8 letters).
18. Movement of particles from an area of higher concentration to lower concentration (9 letters).
21. The process of using electricity to decompose a compound (12 letters).
22. A starting substance in a chemical reaction (8 letters).
25. A state of matter with a definite shape and volume (5 letters).
26. A type of chemical bond where electrons are shared (8 letters).
30. Gain of electrons during a chemical reaction (9 letters).
32. The negative electrode in electrolysis (7 letters).
34. A neutral particle in the nucleus (7 letters).
36. A reaction between an acid and a base to form water and a salt (14 letters).
37. A type of chemical bond formed by the transfer of electrons (5 letters).
39. Two or more atoms bonded together (8 letters).

1. The theory that particles must collide with sufficient energy to react (15 letters).
5. An insoluble solid that forms during a chemical reaction (11 letters).
6. A representation of a substance using chemical symbols (7 letters).
8. The smallest unit of matter (4 letters).
10. A state of matter that takes the shape of its container but has a fixed volume (6 letters).
12. A substance formed as a result of a chemical reaction (7 letters).
14. The speed at which a chemical reaction occurs (13 letters).
15. A negatively charged particle orbiting the nucleus (8 letters).
17. Transition of a substance directly from solid to gas without becoming a liquid (11 letters).
19. Loss of electrons during a chemical reaction (9 letters).
20. A principle that predicts the effect of changes in equilibrium (11 letters).
23. A reaction that releases heat (10 letters).
24. The positive electrode in electrolysis (5 letters).
27. A substance that speeds up a reaction without being consumed (8 letters).
28. A positively charged particle in the nucleus (6 letters).
29. An atom or molecule with a net electric charge (3 letters).
30. A reaction where the products can reform into reactants (10 letters).
31. The joining of atoms to form molecules or compounds (7 letters).
33. A state of matter with no fixed shape or volume (3 letters).
35. A reaction that absorbs heat (10 letters).
38. The amount of a substance in a given volume (13 letters).