Derbis covered the park of P IC DC
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
Answer:
I had to do this project and its probably different from your experience but ill put my essay.
Explanation:
In 2019, if somebody told me that next year the world would be shut down and nobody could get within six feet of each other, I would have brought that person to a mental facility. The coronavirus is the most unimaginable, crazy period of time I (and probably the rest of the world) have ever lived through.
I’ve missed out on many things such as vacations, events, birthday parties, and fun activities. Towards the end of the sixth grade, there were all these fun activities and field trips planned since we were graduating elementary school. Only a week before all those activities were to start, the schools shut down and all we got was a driveby graduation at our school which I did actually enjoy but let's face it, that little event did not make up for the loads of things our grade was so very excited to do. My family was also supposed to go to Martha’s Vineyard with my aunt, cousin, and her fiance which we had started doing every summer, but we had to cancel it. The summer was nice though, as I went downtown a lot with my friends, went on my boat a lot, practiced sports, and swam in my pool. I think we can all agree that the summer probably would have been better without a global pandemic to worry about.
Although it’s been hard, the coronavirus has had some upsides to it. I’ve been recently focusing on improving myself/health and if the pandemic hadn’t happened, I wouldn’t have as much time daily and throughout the year to make these improvements for myself. For example, I’ve been going to the local CrossFit gym every day after school and I even participated in a nutrition challenge and won! It built up my self confidence a lot and I'm as fit and as healthy as I've ever been thanks to the extra time I've had to better myself. A lot of people have been saying things about the coronavirus making them have depression, anxiety, and social anxiety and I suppose I gained a bit of that (who hasn’t?) but it’s been really nice to get to focus on myself for a whole year and try new things I've always wanted to do but haven’t had time for. The pandemic has changed me, in some ways for the better because I take things less for granted now and really care about my health, state of mind, and wellbeing much more.
Although "the girls" is in plural form, "each of the girls", the subject, is in singular form.
Therefore, the correct answer is c. her, for it corresponds with the subject.
Hope this helps~
