Chemistry Review Crossword Puzzle

3. What's the measure of how close a measurement comes to the actual or true value of whatever is measured?
5. A ______ reaction is a chemical reaction in which the products reform the original reactants.
8. A _____ has a definite shape, volume, and melting point.
9. What are properties of metals and nonmetals, solids, and semi-conductors?
15. What is a quantitative description that includes both a number and a unit?
18. A ______ reaction is when a single compound breaks down.
19. A ________ mixture that cannot easily be separated.
21. _______ bonds consist of two metals.
22. What's the tendency of a substance to undergo chemical reaction?
24. What has a definite volume but no definite shape?
25. The ______ yield is the amount of a product mathematically possible.
27. What's in each column?
29. Hydronium is a ______.
30. what is the SI base unit for temperature?
32. What are poor conductors, brittle, dull, and gases?
36. ________are in group 17 and are salt formers.
37. What's a substance that cannot be broken down by chemicals?
39. _______ energy is also called radiant energy
40. What's the formation of a negative ion?

1. Hydroxide is a _______.
2. A _____ reaction is when two or more substances combine.
4. Who's the scientist that compared electrons in an atom to planets in the solar system?
6. What's it called to go from a solid to a gas?
7. a is the symbol for an _____ particle.
10. ________ bonds are made of two nonmetals
11. What's the mixing of the particles of 2 substances caused by their random motion?
12. A small, whole number that appears in front of a formula.
13. What's in each row?
14. A ________ mixture that can be separated.
16. What's the ability to do work and make change possible?
17. What is a chemical substance of two or more different chemical elements?
20. What's the measure of how close a series of measurements are to one another?
23. What are good conductors, shiny, and ductile?
26. ______ metals are found in group 1.
28. What's it called for two or more substances that are combined without chemicals?
31. ______ is when an electron drops from a higher energy level to a lower energy level and emits light.
33. The _____rule says atoms will combine to have 8 valence electrons.
34. What's the formation of a positive ion?
35. What measures the distance?
38. _______ bonds are composed of metals and nonmetals