Write the letter of the matching definition next to each term.
1. chemical
A. A number or ratio derived from a series of observed facts
2. pH
B. The dialect of Ancient Greek spoken and written in Attica and Athens and ___
3. reactants
C. A coloring material that turns red in acid solutions and blue in alkaline solutions
4. combination
D. Commodities offered for sale (plural)
5. hydroxide
E. A chemical reaction in which an acid and a base interact with the formation of a salt
6. products
F. A compound of sulphur and some other element that is more electropositive
7. decomposition
G. The analysis of a vector field
8. sulfate
H. Occurring or formed with the liberation of heat
9. endothermic
I. A ___ solid substance in suspension or after settling or filtering
10. combustion
J. Occurring or formed with absorption of heat
11. carbonate
K. A liquid substance capable of dissolving other substances
12. exothermic
L. A salt or ester of ___ acid
13. neutralisation
M. Bottom part something stands on; a safe spot in baseball
14. ammonium
N. Substance used in or made by chemistry
15. precipitate
O. A salt or ester of sulphuric acid
16. acid
P. The logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter
17. nitrate
Q. The dissolved matter in a ___
18. solute
R. A chemical substance that is present at the start of a chemical ___ (plural)
19. base
S. A process in which a substance reacts with oxygen to give heat and light
20. solvent
T. A compound of an oxide with water
21. indicator
U. Any of various water-soluble compounds having a sour taste and capable of turning litmus red
22. sulfide
V. A collection of things that have been ___
23. ionic
W. Any compound containing the ___ group
24. litmus
X. The ion NH4 derived from ___