(Q).
Q: What is the name of the procedure where an unknown compound can be analyzed in the laboratory in order to determine the percentages of each element contained within it? Choices: - electrical analysis - chemical analysis - gaseous analysis - elemental analysis A:
(A).
elemental analysis

(Q).
Q: How does air pressure change as altitude increases? Choices: - goes up and down - stays the same - It increases - it decreases A:
(A).
it decreases

(Q).
Q: Earthworms and ants possess what type of bodies, which means division into multiple parts? Choices: - elongated - truncated - elliptical - segmented A:
(A).
segmented