Thermo chemistry
Name: ______________________ Date: ____________
Write the letter of the matching definition next to each term.
1. reaction
A. A stable situation in which forces cancel one another
2. thermal
B. Any of various water-soluble compounds having a sour taste and capable of turning litmus red (plural)
3. energy
C. A process in which a substance reacts with oxygen to give heat and light
4. exothermic
D. Rising current of warm air
5. endothermic
E. The act that results in something coming to be
6. combustion
F. A garment that can be worn inside out
7. respiration
G. To stop travelling by applying a brake
8. braking
H. A substance that initiates or accelerates a chemical reaction without itself being affected
9. making
I. Any of various water-soluble compounds capable of turning litmus blue and reacting with an acid (plural)
10. bonds
J. Occurring or formed with absorption of heat
11. burning
K. An electrical force linking atoms (plural)
12. equilibrium
L. A polymer of styrene
13. reversible
M. Occurring or formed with the liberation of heat
14. acids
N. A material such as glass or porcelain with negligible electrical or thermal conductivity
15. alkalis
O. A process in which a substance reacts with oxygen to give heat and light
16. insulator
P. The power to do work or make things move
17. polystyrene
Q. A brief event in which two or more bodies come together
18. thermometer
R. The metabolic processes whereby certain organisms obtain energy from organic molecules
19. catalyst
S. A process in which one or more substances are changed into others
20. collision
T. Measuring instrument for measuring temperature