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146<br />
The Learning Goal for this assignment is:<br />
Thermochemistry Review Questions<br />
Particulate Nature of Matter and Changes of State<br />
Watch the following video and answer the questions.<br />
1. How are solid particles arranged?<br />
They are in a fixed framework<br />
2. What is supplied to make a solid become a liquid?<br />
ENergy in the form of heat<br />
3. What does ice take from the environment when melting?<br />
It takes energy from the environment<br />
4. What do molecules need to evaporate?<br />
they need energy in form of heat<br />
5. Do all substance need the same amount of energy to evaporate?<br />
No, it varies by substance<br />
6. Can gases change straight into solids?<br />
Yes, it can with enough energy<br />
1. Which of the following statements about the atoms and molecules in all three states of matter is<br />
NOT true.<br />
a. Particles of matter are in constant motion<br />
b. Space exists between particles<br />
c. Adding heat increases the size of the particles<br />
d. The particles of matter are too small to be seen with the unaided eye<br />
2. Which statement is correct?<br />
a. All particles in a given substance at a given temperature have equal kinetic energy<br />
b. Heat always flows from a hotter object to a cooler object<br />
c. Heat is a measure of average kinetic energy of a substance<br />
d. Temperature measures the total kinetic energy of a substance<br />
3. In what state does matter have the most kinetic energy?<br />
a. Solid<br />
b. Liquid<br />
c. Gas<br />
d. Plasma<br />
4. In what state does matter have the least kinetic energy?<br />
a. Solid<br />
b. Liquid<br />
c. Gas<br />
d. Plasma<br />
Describe phase transtitions in terms of kinetic molecular theory<br />
5. What is the best description of the relationship between states of matter and kinetic energy?<br />
a. There is no relationship<br />
b. As kinetic energy increases the attraction between molecules increases<br />
c. As the kinetic energy decreases the attraction between molecules decreases<br />
d. As the kinetic energy increases the attraction between molecules decreases
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