Question
Solder is a silver metal used to hold pipes together when the solder is heated it melts and acts as a type of metal glue. Mrs. Hanley heats a piece of solder until it melts between two pipes what best identifies the point at which a physical change first takes place?
A) when the solder melts
B) when the solder cools down
C) when the solder is a soft metal
D) when the solder becomes solid again
Answer:
The correct answer is A)
Explanation:
The question is a good one. It asks to know when the PHYSICAL change first takes place. It means that it is possible to have changes to the Solder that is not immediately visible to the eye.
When any object is heated, its molecules vibrate even faster causing the bonds holding them to expand. This invariably leads to an expansion of the object. In the case of metals, metals when heated to a degree can actually become liquid.
The solder in this case has expanded before it melts. The melting is however easy to see more than the expansion of the molecules that make up the metal.
Metals when they melt do not assume the shape they were prior. When they cool off, they become as strong as they were before thus the binding quality of the solder in this case. However, they can only take the shape of the container they are poured into or the shape they were melted into if it was not containerized.
Cheers
The first sentence is correct bc the semicolon divides two independent clauses while replacing a conjunction
Answer:
A. The United States should not interfere with Russian relations in Chechnya.
B. The state should increase driver's registration fees to pay for the new highway overpass.
B. The success of chimps in mastering sign language, however, indicates that they have indeed learned a simple language.
Explanation:
For the first question, A is thesis for writing a persuasive essay. A persuasive essay must convince the audience to take some sort of action. Option A is the best choice because it is trying to convince the audience that interfering in Russian relations in Chechnya would not be a good idea.
The second question has a similar requirement. The thesis statement needs to be something that is actionable. Increasing the driver's registration fees is the only action that is suggested in any of the sentences.
The last answer asks about the thesis of the passage. A thesis cannot be cited text so the first option is incorrect. Option C is not specific and doesn't actually say the main idea. This is also true of option D, it only focuses on one group of scientists rather than the bigger picture.
C is considered to be a sentence fragment because it looks like a sentence but it isn't.
