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