8. Which two elements react together to form an ionic compound?
element
electronic structure
2,4
11 pm
2,8
3 X > N
2,8,1
2,8,7
A
W and X
B
X and Y
C Y and Z
D
Z and w

In any energy conversion, some of the energy is lost to the environment as question 5 options: electrical energy potential energy sound energy thermal energy

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

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange