A drop of hydrochloric acid on marble produces carbon dioxide: chemical or physical change?

August 21, 2018 Educator

THE BET

Summarize what has happened to the banker while the lawyer has been in confinement.

The banker went financially and psychologically downhill during the years that the lawyer was in solitary confinement in a lodge on the banker’s estate, but Chekhov does not maintain that there was…

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SCIENCE

If Canadians used 7.0 X 10 11 kW x h for 1 year and there are 35 million Canadians, what is the…

We are given that all Canadians used 7*10^11 kW*h for 1 year. This is the total electrical energy used by Canadians in 1 year. Since there are 35 million Canadians, divide this energy by the 35…

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TO KILL A MOCKINGBIRD

In To Kill a Mockingbird, what lesson do you think Atticus wants Jem to learn by having him read…

Mrs. Henry Lafayette Dubose was “plain hell,” in the immortal words of Jean Louise “Scout” Finch, the narrator of Harper Lee’s classic novel, To Kill a Mockingbird. The old woman who lived two…

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NIGHT

How does dehumanization change Elie Wiesel’s outlook of the world in Night?

Elie Wiesel witnessed the most ghastly horrors in human history, and survived to write about them. That is no small feat. As the reader absorbs Wiesel’s thoughts and memories, however, in his…

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SCIENCE

Are there more examples of changes that are both chemical and physical other than a candle burning?

A change can’t be both physical and chemical, but physical and chemical changes can occur simultaneously. This is what’s happening with the burning candle: the wax is melting, which is a physical…

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THE CRUCIBLE

What can readers learn from Arthur Miller’s play, The Crucible? What can be learned about the…

How much one learns from Arthur Miller’s play The Crucible and the period in which it is set is dependent upon how closely one studies the playwright’s notes preceding the play’s opening as well as…

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ARTS

Who are three major authors who wrote during the period of Romanticism?

Romanticism is a movement that spanned the late 18th and early 19th centuries. Before we talk about the important poets of this period, it’s important to understand what “the period of Romanticism”…

THE GREAT GATSBY

What is the slang term that Gatsby derives from?

According to Merriam-Webster, “Gat” is “slang for a handgun.” The Tommy Gun, or the gat, was a gun that was associated with gangsters during Prohibition, a time in the United States when alcohol…

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SCIENCE

On a roller coaster, where does the car have both Kinetic energy and potential energy?

Potential energy is related to vertical position and kinetic energy is related to speed or velocity. The roller coaster car has maximum potential energy at the greatest height it reaches and…

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WALK TWO MOONS

In Walk Two Moons by Sharon Creech, what is the difference between the terms “Indian” and “Native…

Sal’s mother had ancestors who were Native American, which she was very proud of. However, she did not like the term “Native American” because it sounded “primitive and stiff,” she said….

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SCIENCE

What is the name of light that people can see?

The light that people can see is called visible light. In order to understand light, one must first understand what light is. Light is actually electromagnetic radiation and is a very small region…

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SCIENCE

What do p.m. and a.m. stand for?

The abbreviations are Latin, and a.m. stands for “ante meridiem” while p.m. stands for “post meridiem.” In other words (and more common usage), a.m. means the hours between midnight and noon, while…

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HAMLET

What are some pieces of evidence that prove Hamlet didn’t really love Ophelia?

Hamlet is a remarkably changeable character, especially in his interactions with Ophelia. Presumably, Hamlet expressed affection, possibly even feelings of love, to Ophelia prior to the timeframe…

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SCIENCE

how do birds fly?

Birds have a lot of adaptations for flight. 1) Birds have very lightweight bones with air sacs. But they are very strong. 2) They have highly efficient respiratory and circulatory system, which…

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HISTORY

Why was inflation so rampant during World War I?

It is not uncommon for inflation to occur during a war. Because resources have to be allocated for the war effort, shortages of supplies at home become common. This will cause prices to rise. The…

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SCIENCE

Why is it important for scientists to know the properties of matter?

It’s important for scientists to know the properties of matter because all things are made up of matter. Each type of matter has different physical characteristics and scientists need to know and…

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TO KILL A MOCKINGBIRD

How does Atticus feel when he delivers his lecture to Scout and Jem about their family’s “gentle…

Aunt Alexandra moves into the Finch household at the beginning of Chapter 13. Alexandra feels that is necessary to teach Jem and Scout about their family’s history in order to instill a sense of…

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STARGIRL

What is the exact quote Stargirl says when she is divulging her previous names from Jerry…

Stargirl reveals the different names that she has called herself when a jury member for the high school show Hot Seat interviews her. Students from the school are asked to be a part of a “jury” who…

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RAY BRADBURY

In All Sumer in a Day, is jealousy a theme?

The main theme of “All Summer in a Day” could certainly be described as jealousy when we look at the way the other children treated the main character, Margot. There are other themes connected to…

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TO KILL A MOCKINGBIRD

What causes Scout to question “pulpit Gospel”? How does her questioning relate to Miss Maudie?

Scout questions the “pulpit gospel” after envisioning Miss Maudie in hell. Miss Maudie told Scout about an instance when “some of ‘em came out of the woods one Saturday and passed by this…

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SCIENCE

Is matter created or destroyed during the photosynthetic process?

Matter is neither created nor destroyed during the chemical reaction of photosynthesis. In keeping with the Law of Conservation of Matter, the mass of the products formed is equal to the mass of…

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THE ADVENTURES OF HUCKLEBERRY FINN

Throughout The Adventures of Huckleberry Finn, what does Huck struggle with emotionally?

Throughout the novel, Huck struggles with what society says he should do. From the very beginning, Huck has been asked to conform to the values and beliefs society thinks is right. For example,…

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SCIENCE

I have a Biology project to do. I need to pick an analogy for a cell. What can I use as an…

For this project, your teacher wants you to make comparisons between a cell, and some type of an organization. As you know, cells–eukaryotic cells in particular–have various organelles that…

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TO KILL A MOCKINGBIRD

I’m writing a five paragraph essay about hypocrisy in To Kill A Mockingbird, and I need help…

There are many examples of hypocrisy in the book. Here are three examples. First, we see hypocrisy in Miss Caroline. She is an educator who criticizes Scout for being able to read. This episode…

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THE MINISTER’S BLACK VEIL

In “The Minister’s Black Veil,” what is the belief in the individual and common man?

In Hawthorne’s short story, “The Minister’s Black Veil,” the emphasis is on the way in which the individual can differentiate himself from the common man by being willing to speak the truth about…

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ANTIGONE

In Antigone, why does Creon think that Eteocles should be buried?

In Antigone, Creon thinks that Eteocles should receive a proper burial because he fought in honor of Thebes. After Oedipus exiles himself and eventually dies, the decision is made that Eteocles…

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THE SIGN OF THE BEAVER

What happens in chapters 13–15 of The Sign of the Beaver?

In chapters 13 to 15, the relationship between Matt and Attean begins to change. Up until this point, Attean has mostly been a reluctant recipient of Matt’s reading lessons at the request of…

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ANTIGONE

In Antigone, what does Creon think is more important -public welfare or private friendship?

In Antigone, Creon appears to believe that public welfare is more important than private friendship because he maintains the order that the person who buries the body of Polynices still be put to…

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THE GIVER

In The Giver, what can you learn about release just by reading Chapters 9 and 10?

We learn that people can apply for release, and the elderly are released. When Jonas gets his assignment, he feels different from the rest of the members of his community for the first time. He…

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A CHRISTMAS CAROL

What does Scrooge regret as he watches each scene from the past unfold?

In Stave Two of “A Christmas Carol,” Scrooge journeys into his past and relives some upsetting and uncomfortable experiences from his youth. In the first of these, Scrooge revisits his boarding…

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THE LOTTERY

In the short story “The Lottery” why do the villagers say they must not give up?

The most interesting thing about the story is that the villagers keep up the tradition of stoning someone once a year, but they do not actually know why they should continue this savage and cruel…

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HISTORY

What was Shays’ Rebellion?

Shays’ Rebellion was an uprising of farmers in Massachusetts. They were concerned that they were losing their farmers and/or being sent to prison because they couldn’t pay their debts. In…

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HISTORY

What did John Locke think about taxation? 1 image

John Locke outlines his beliefs about taxation in his Second Treatise of Government (1690) in “Section 140.” The basic premise of his philosophy is that all humans have the natural rights to life,…

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THE CELEBRATED JUMPING FROG OF CALAVERAS COUNTY

What adjectives best describe the character of Jim Smiley?

Jim is opportunistic, obsessive, sneaky, and ultimately naive. 1. Jim is opportunistic: the storyteller, Simon Wheeler, describes Jim as “lucky,” but really Jim’s supposed luck comes from his habit…

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HAMLET

In Hamlet, Act I, “the ghost stalks by like a warrior,” what literary device is this an example of?

This is an example of a simile. A simile is a literary device that compares two things, usually using the words “like” or “as.” Similes are used to create images in the reader’s mind,…

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THE TWENTY-ONE BALLOONS

How does Professor Sherman change throughout The Twenty-One Balloons?

In the young reader’s novel The Twenty-One Balloons, Professor Sherman mostly changes with respect to his scientific thinking. Also, since he had pleasant experiences with the people he met on…

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SCIENCE

An astronaut who strays too for from her ship could use a pistol to get back by firing in the…

There are several ways of solving a problem like this, such as using potential and kinetic energy equations instead of the usual kinematic equations. Unfortunately, since we have no actual data to…

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A ROSE FOR EMILY

Why does Faulkner use this particular narrator in “A Rose for Emily”

In William Faulkner’s short story “A Rose for Emily”, the narrator is actually a composite of the different voices of the townsfolk. This townsfolk is essentially ever inhabitant in Jefferson…

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TO KILL A MOCKINGBIRD

What are some direct quotes from To Kill a Mockingbird that prove Jem Finch is sensitive?

Jem Finch’s sensitivity is evident in several of his interactions with characters in the novel. The most obvious of these occurs after the trial when the verdict has been delivered. He’s visibly…

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SCIENCE

How much heat is needed to heat 5 g of water from 0°C to 100°C?

The amount of heat absorbed by a substance to change its temperature is proportional to the mass of the substance, and the temperature variation, that is to be achieved. The equation of the amount…

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TO KILL A MOCKINGBIRD

Please provide quotes from Harper Lee’s To Kill a Mockingbird that show how Scout is pure,…

Harper Lee’s To Kill a Mockingbird is a coming-of-age story (bildungsroman) that shows how Scout and her brother Jem come to know their father and their community better. Scout, for example,…

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HISTORY

What was the WPA program?

The WPA, first called the Works Progress Administration and later changed to the Works Projects Administration, was a federal program created in 1935 to help solve the extreme unemployment caused…

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ROMEO AND JULIET

How does Shakespeare show in Romeo and Juliet that impulsive decisions lead to tragic outcomes?…

Romeo’s actions throughout Romeo and Juliet are constantly impulsive and emotional, leading to some tragic consequences. All of his actions are framed by how we meet him: forlorn, and in tears…

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HISTORY

Why did the number of immigrants into the U.S. increase after 1930?

I believe that you must have made a mistake in copying this question. Immigration to the United States did not increase after 1930. In fact, it decreased significantly. The reason it decreased…

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THE VELDT

In “The Veldt”, how would we describe the father’s character?

George Hadley is a well-meaning and relatively normal father whose efforts are ultimately defeated by technology. The message here seems to be that the technology replaced him as a father to the…

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HISTORY

What interests you and surprises you about Shakespeare’s potential to be relevant to audiences…

Though it has been five centuries since Shakespeare wrote his plays, he remains as relevant to audiences today as he did in the Elizabethan Era. What is probably most surprising about his relevance…