Прочитайте текст Aluminium water oxygen and carbon dioxide are substances. Some substances are eleme...: ответ на тест 782143 - Английский язык

Прочитайте текст
Aluminium, water, oxygen, and carbon dioxide are substances. Some substances are elements and some substances are compounds. Elements have only one type of atom whereas compounds have more than one type.
Ответьте на вопрос
How many types of atom do elements have?

Прочитайте текст
Aluminium, water, oxygen, and carbon dioxide are substances. Some substances are elements and some substances are compounds. Elements have only one type of atom whereas compounds have more than one type.
Ответьте на вопрос
How many types of atom do elements have?

Прочитайте текст
Boats on canal go through locks to move up or down from one level to another. The locks have large lock gates to let the boats in and out. They also have smaller sluice gates; these open and close to control the water level. The scale on the side shows the depth of the water in metres.
Ответьте на вопрос
What does the scale on the side of the lock show?

Прочитайте текст
Engineering is putting knowledge of Nature to practical use. The end result of engineering is some physical thing: a machine, a tool, a gadget. Engineering is solving problems. It’s convenient to discuss engineering projects within the framework of five steps for solving problems: define the problem, identify possible solutions, select a solution, implement the solution, verify the solution.
Ответьте на вопрос
What is the end result of engineering?

Прочитайте текст
Alfred Nobel was a Swedish chemist who lived from 1833 to 1896. Alfred and his brother made explosives, but in 1864 there was an accident in the laboratory and Alfred’s brother was killed. Alfred then decided to spend his life truing to make explosives safer to use.
One of the strongest explosives at that time was nitroglycerine. This explosive, which looks like oily water, is very dangerous to use or even to carry. Nobel wanted to study nitroglycerine so he could find a way to make it safer. Nobel had an idea of taking nitroglycerine out on a boat in the middle of a lake and working with it there.
When Nobel wanted to take the nitroglycerine he was working with from one place to another, he put it into small boxes. Then he put the small boxes into a larger box made of clay. One day, when he opened the large clay box, he found that nitroglycerine was coming out of one of the small boxes. To his surprise, the large clay box was still dry. This gave him the idea of mixing clay with nitroglycerine. The clay would take the oil out of nitroglycerine and make it safer. He called this explosive ‘dynamite’.
Ответьте на вопрос
Why did Alfred decide to spend his life trying to make explosives safer to use?

Прочитайте текст
One day, Nicola Tesla had a vision of a whole new type of electric power system. Tesla went to work as an engineer for the Continental Edison Company. While he was there, he built the first model of his motor. But the people at the company weren’t interested in it. Tesla decided to go to the United States to talk to the great inventor Thomas Edison.
Ответьте на вопрос
Why did Tesla decide to go to the United States?