Chemistry Crossword

1. substances that cannot be dissolved to form a solution
7. substance that is dissolved
10. a change in matter in which new materials with new chemical and physical properties are formed
12. solutions containing more than the maximum amount of solute normally capable of dissolving at a certain temperature
14. sharing of electrons by atoms so that all atoms involved achieve a filled valence level
16. a mixture containing particles that settle out if left undisturbed
18. two compounds exchange ions
19. oxygen combines with a substance and releases heat and light
20. transfer of electrons between atoms, resulting in cations and anions

2. solution that contains the maximum amount of solute
3. atoms of one element replace the atoms of another elements in a compound
4. Equilibrium dissolving and recrystallizing of solute occur at equal rates
5. atoms will gain, lose, or share valence electrons to attain 8 valence electrons
6. substance that does the dissolving
8. a characteristic that can be observed or measured without changing the samples composition
9. substance that can be dissolved
11. a mixture that is not uniform
13. solution that contains less than the maximum amount of solute
15. individual particles cannot be distinguished
17. a single compound breaks down into two or more elements or new compounds