Question 7 Which of the following is the most reliable way to determine whether two unknown samples come from the same substance?

A
compare their masses

B
determine their electrical charge

C
identify the location where they were discovered

D
compare their reactions when exposed to other known substances

Read the following passage: sari couldn't believe her bad luck. she had locked her keys in the car. to add fuel to the fire, her cell phone was in the locked car, and she was late for a very important meeting. she knocked on her neighbor's door so that she could ask to use his phone, but he was not not home. what was she to do? what role does the idiom in the passage serve? a. it shows that sari has incredibly bad luck when it comes to work.b. it shows that sari's neighbor was not home either.c. it shows that sari locked her keys in the car.d. it shows that sari's situation was worse than it seemed at first.

Shauna wants to use facts from a government website in her speech. which element is she adding to her speech? a. background information b. narrative c. evidence d. commentary e. theme

Which is an example of finding common ground when addressing a counter argument? a. products with genetically modified organisms (gmos) in them are frankenfoods that are unnatural, dangerous, and foul tasting. b. it’s really not important that some people feel texting while driving isn’t a big deal; it’s a fact that it’s dangerous and should be illegal. c. while both sides agree that processed foods are more convenient, the damage they do to a person’s health should not be ignored. d. testing on animals has produce several lifesaving vaccines and medicines that have saved countless human lives.