Write the letter of the matching definition next to each term.
1. reaction
A. Any of various water-soluble compounds having a sour taste and capable of turning litmus red
2. reactant
B. Commodities offered for sale
3. product
C. Occurring or formed with absorption of heat
4. element
D. A substance that can be consumed to produce energy (plural)
5. compound
E. Gas in the air that we need to breathe
6. synthesis
F. Undesirable state of the natural environment being contaminated with harmful substances as
7. decomposition
G. Occurring or formed with the liberation of heat
8. oxidation
H. Clear liquid we drink that falls as rain
9. combustion
I. The analysis of a vector field
10. oxygen
J. A process in which one or more substances are changed into others
11. heat
K. A chemical substance that is present at the start of a chemical ___
12. light
L. The particular auditory effect produced by a given cause
13. fuels
M. A state of deterioration in metals caused by oxidation or chemical action
14. energy
N. A building with glass walls and roof
15. corrosion
O. Participating readily in ___
16. rusting
P. The formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence
17. water
Q. What lets us see; the opposite of dark
18. reactive
R. An abstract part of something
19. endothermic
S. The process of oxidizing
20. exothermic
T. The power to do work or make things move
21. sound
U. A substance formed by chemical union of two or more elements or ingredients in definite proportion
22. greenhouse
V. The process of producing a chemical compound
23. pollution
W. Energy that makes things warm
24. acid
X. A process in which a substance reacts with oxygen to give heat and light