English, 07.09.2021 19:30 brittneyrost3722
HELP GIVING BRAINLIEST
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 the last paragraph?
Early matches were dangerous and awkward.
John Walker made the first match.
Phosphorus was the key to the modern match.
Walker's match was better than what came before.
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.
What is the main purpose of this sentence in the essay?
To describe the misery of early human existence
To explain how early fires were started
To suggest humans have an easier life than we once did
To support the idea that matches really changed human life
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HELP GIVING BRAINLIEST
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