Chemistry Crossword

2. an ion that has a positive charge
6. whole number in front of a formula in a chemical equation
8. unit that energy is measured in
9. another word for "state"
13. lowest energy state
14. the study of the transfer of energy as heat
16. the substance that is dissolved
17. a substance made up of atoms of two or more different elements joined by chemical bonds
19. arrangement of electrons in an atom
24. shows the trend in solubility of a substance at a given temperature range
27. an atoms has more energy than it does at its lowest state
28. an ion that has a negative charge
30. exactness of a measurement
31. series of steps followed to solve problems
34. element that is shiny and conducts heat

1. how close a measurement is to the true value
3. bond between a metal and a nonmetal
4. bond formed between to metalloids
5. distance from any point on a wave to an identical point on the next wave
7. horizontal row of elements that change periodically with the atomic numbers of the elements
10. the time required for half of a radioactive sample to decay
11. forward and reverse reactions happen at the same time
12. absorbs heat and energy
15. chemical formula that shows the composition of a compound in terms of the relative numbers and kinds of atoms in the simplest ratio
18. parts of the mixture that look the same
19. the ability of an atom to attract electrons
20. bond between two nonmetals
21. one of the elements in Group 18, stable elements
22. atom that has the same number of protons but a different number of neutrons
23. one of the elements of Group 1 of the periodic table
25. more dense than a gas but less dense than a solid
26. releases heat and energy
29. substance that forms in a chemical reaction
32. SI unit used to measure the amount of a substance whose number of particles is the same as the number of atoms
33. one of the elements in Group 17