what clue can be used to identify a chemical reaction?

Answer:

transfer of energy

Explanation:

Four possible clues to chemical change include a transfer of energy, a change in color, the production of a gas, or the formation of a precipitate.

Pls help me! thanks in advance​

True or False: You can't draw evidence to support an argument from aliterary source because they're not true.

On a fishing trip, Josie caught a fish that was 9 inches long. Her brother Rob caught a fish that was 36 inches long.
How many times as long as Josie's fish was Rob's fish?

Heres The Book ( Questions are linked )
Read the following paragraph from “Katherine Johnson Biography.”

The 1957 launch of the Soviet satellite Sputnik changed history—and Katherine Johnson’s life. In 1957, Katherine provided some of the math for the 1958 document Notes on Space Technology, a compendium of a series of 1958 lectures given by engineers in the Flight Research Division and the Pilotless Aircraft Research Division (PARD). Engineers from those groups formed the core of the Space Task Group, the NACA’s first official foray into space travel, and Katherine, who had worked with many of them since coming to Langley, “came along with the program” as the NACA became NASA later that year. She did trajectory analysis for Alan Shepard’s May 1961 Freedom 7, America’s first human spaceflight. In 1960, she and engineer Ted Skopinski coauthored Determination of Azimuth Angle at Burnout for Placing a Satellite Over a Selected Earth Position, a report laying out the equations describing an orbital spaceflight in which the landing position of the spacecraft is specified. It was the first time a woman in the Flight Research Division had received credit as an author of a research report.

I NEED HELP ESSAY 500 WORDS PLEASE

The looking glass war
Need a paragraph of chapter 1-9 please

i will give crown
Cave painting have been found in several different places. No matter where in the world they are found, they usually show hunting scenes. Why do you think this is? What do you think these drawings meant to the cultures that made them?

pls help!!!!!!!!

Neither Carmen nor her sisters have bought a gift for (her, their) brother.

which sentence from the article would be most important to include in a summary of the article!
​

As Elie Wiesel describes the departure from camp, do his words foreshadow death and suffering or liberation? Use textual evidence to support your ideas!

Why you should have a cell phone too, if everyone have it? Tell me your opinion and explain why.

I will mark brainliest to the correct answer.

How has technology improved your life

. independent or dependent clause

What is the use of a hydrometer​

whom or what does montag most likely believe is at the door while they are reading the books?

Can someone give me the right answer for this question please

Most students enjoy _____________books in their free time.

What type of things do people burn? For each why do they burn them? Why fire? What does for represent?

ASAP HELP I WILL GIVE BRAINLIEST I JUST REALLY NEED HELP

What does Holmes say upon seeing Dr Watson that shows how observant he truly is? ​

a poisonous snake that has the letters d r e a d​

community service is almost always performed____.

How did mark Twain’s life and times influence his general portrayal of slavery and his specific portrayal of Jim?

What does the author enumerate and describe in "Respecting the Flag"?

in a warriors daughter, what drives those qualities in a person

How do the senses used in the excerpt from "Digging" and the haiku affect a reader's understanding and interpretation of each? The excerpt from "Digging" relies much more heavily on images of nature to convey its main idea than the haiku does. The excerpt from "Digging" uses lines of equal length throughout, while the lines of the haiku are of varying lengths. The excerpt from "Digging" discusses the relationship between writing and farming, while the haiku only discusses nature. The excerpt from "Digging" focuses on sound devices to reveal its story, while the haiku focuses on visual imagery.

Select the correct answer.
The author uses Lily's behavior to develop which theme?

A. Desperate times call for desperate measures.
B. Intelligence is given to some but not to others.
C. Patience rewards those who practice it.
D. Success eludes those who do not put forth effort.

Which option would be most useful to determine how to cite a research source appropriately?

A) Merriam-Webster Thesaurus

B) Publication Manual of the American Psychological Association

C) Tufte's Artful Sentences

D) Garner's Modern American Usage​

There never was a time when the world was without fire, but there was a time when men did not know how to kindle fire; and after they learned how to kindle one, it was a long, long time before they learned how to kindle one easily. In these days we can kindle a fire without any trouble, because we can easily get a match; but we must remember that the match is one of the most wonderful things in the world, and that it took men thousands of years to learn how to make one. Let us learn the history of this familiar little object, the match.

Fire was first given to man by nature itself. When a forest is set on fire by cinders from a neighboring volcano, or when a tree is set ablaze by a thunderbolt, we may say that nature strikes a match. In the early history of the world, nature had to kindle all the fires, for man by his own effort was unable to produce a spark. The first method, then, of getting fire for use was to light sticks of wood at a flame kindled by nature—by a volcano, perhaps, or by a stroke of lightning. These firebrands were carried to the home and used in kindling the fires there. The fire secured in this way was carefully guarded and was kept burning as long as possible. But the flame, however faithfully watched, would sometimes be extinguished. A sudden gust of wind or a sudden shower would put it out. Then a new firebrand would have to be secured, and this often meant a long journey and a deal of trouble.

In 1827, John Walker, a druggist in a small English town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. The druggist had discovered the first friction-chemical match, the kind we use to-day. It is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. Although Walker's match did not require the bottle of acid, nevertheless it was not a good one. It could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. In a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. The match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. It would ignite when rubbed on any dry surface, and there was no longer any sputtering. This was the phosphorus match, the match with which we are so familiar.


What is the main idea of this text?