Question

video worksheet-bill nye \states of matter\
the questions follow along with the video. answer as many of the questions as possible.

1. the universe is made of ______________
2. the only difference between molten (liquid) steel and solid steel is the amount of __________ in it
3. solid, liquid, gas are all ______________ of matter
4. for matter to \change phase\ we must add or take away ____________________
5. a freezer acts like a heat ____________ to remove the energy from inside the freezer to outside the freezer
6. the temperature of liquid nitrogen is -________ degrees celsius
7. when you put cool something in liquid nitrogen the molecules ____________ down and get closer together
8. the temperature gauge like a thermometer reads a lower temperature when the molecules of the liquid or gas are moving _______________
9. true or false at absolute zero there is absolutely no motion of the molecules that make up the matter
10. true or false it is possible to reach the temperature of absolute zero.
11. the gas in a can of soda is ____________________
12. true or false you can \weigh\ a gas
13. glowing gas because it is charged with electricity is called a ____________. (hint: the fourth state of matter)
14. a __________ and a __________ take the shape of their container but a solid holds its shape
15. did you like this video? _______ why or why not? ___________________________________

Explanation:

These questions are about the states of matter, molecular motion, and related concepts, which fall under the subfield of Physics (a part of Natural Science). To answer them, one would recall knowledge from physics about matter's states, energy transfer, molecular behavior, and the fourth state of matter (plasma). For example:

1. The universe is made of matter (and energy, but in the context of states of matter, matter is the focus).
2. The difference between molten and solid steel is energy (heat) - molten steel has more energy, allowing molecules to move more.
3. Solid, liquid, gas are states of matter.
4. To change phase, we add or remove energy (usually heat).
5. A freezer acts as a heat pump (removes heat from inside to outside).
6. Liquid nitrogen's temperature is -196 degrees Celsius.
7. When cooled in liquid nitrogen, molecules slow down.
8. Lower temperature means molecules move slower.
9. At absolute zero, molecular motion theoretically stops (TRUE, though it's unattainable in practice).
10. Reaching absolute zero is impossible (FALSE, due to quantum effects and the third law of thermodynamics).
11. The gas in a soda can is carbon dioxide.
12. You can weigh a gas (TRUE, as it has mass and weight in a gravitational field).
13. Glowing charged gas is plasma (the fourth state of matter).
14. Liquid and gas take the shape of their container; solid does not.
15. A subjective answer about liking the video and why.

Answer:

s (for each question):

1. matter (and energy, but matter is key here)
2. energy (heat)
3. states
4. energy (heat)
5. pump
6. -196
7. slow
8. slower
9. TRUE
10. FALSE
11. carbon dioxide
12. TRUE
13. plasma
14. liquid; gas
15. (Subjective, e.g., "Yes, because it explained states of matter clearly" or "No, it was too fast" with reasoning)