A postulate of the kinetic molecular theory is listed.
Postulate: The average kinetic energy of gas molecules is related to the temperature
of the gas.
Which of the following activities can be used to demonstrate the postulate? (1 point)
1) Recording the change in pressure when heating an inflated tire
2) Observing the ease of pushing the plunger of a syringe containing gas
3) Observing colored gas spreading into an inverted jar placed on top of a jar
containing the gas
4) Detecting the smell of moth balls in an entire closet when the moth balls are
kept at the bottommost shelf of the closet

Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet

Which order shows the levels of organization from largest to smallest? organism, organ system, cell, organ, tissue organism, tissue, organ system, organ, cell organism, organ, organ system, cell, tissue organism, organ system, organ, tissue, cell