Номер 4, страница 141 - гдз по английскому языку 8 класс учебник Комарова, Ларионова

Across the curriculum. Science. Chemistry - номер 4, страница 141.

Условие.

4 Read the text and answer the questions.

Dmitri Mendeleev and the periodic table

In the past, people believed that the world was made of four elements: earth, water, air and fire. In 1789, the French chemist Antoine-Laurent de Lavoisier published the first list of elements including oxygen, hydrogen and nitrogen. As scientists began to identify new elements, they tried to organize them in a logical sequence.

Dmitri Mendeleev (1834–1907) was professor of chemistry at St Petersburg University in Russia. He developed an early version of the periodic table published in 1869. He arranged the elements into a table so that elements with similar characteristics are in the same vertical groups.

1 What did people believe were the elements?

2 Who published the first list of some elements?

3 When was Mendeleev born?

4 Where did he work?

5 When did he publish his version of the periodic table?

Решение 1.

Решение 2.

Решение 3.

1 What did people believe were the elements?

Ответ: People believed the elements were earth, water, air, and fire. / Люди считали, что элементами были земля, вода, воздух и огонь.

2 Who published the first list of some elements?

Ответ: Antoine-Laurent de Lavoisier published the first list of some elements. / Антуан-Лоран де Лавуазье опубликовал первый список некоторых элементов.

3 When was Mendeleev born?

Ответ: Mendeleev was born in 1834. / Менделеев родился в 1834 году.

4 Where did he work?

Ответ: He worked at St Petersburg University in Russia. / Он работал в Санкт-Петербургском университете в России.

5 When did he publish his version of the periodic table?

Ответ: He published his version of the periodic table in 1869. / Он опубликовал свою версию периодической таблицы в 1869 году.