Номер 7, страница 177 - гдз по английскому языку 11 класс (enjoy english) учебник Биболетова, Бабушис

Appendix 2. What makes Chemistry fascinating? - номер 7, страница 177.

Условие.

7 Work in pairs. Read the chemistry vocabulary and their definitions. Suggest the Russian equivalents for them.

Matter is a general term which refers to anything that occupies space and has mass.

An atom is the smallest unit of matter that has all of the chemical properties of a certain chemical element.

A chemical element is a ‘pure’ form which consists of only one kind of atoms (with identical atomic number) and has specific chemical and physical properties; it cannot be broken down into other substances through ordinary chemical reactions (ex. gold (Au) is a chemical element; it consists only of the atoms of gold)

A molecule is a unit that is composed of two or more atoms; the atoms are held together due to chemical bonds; the atoms can be of one element or of several different elements.

A proton is a particle in an atom with a positive electrical charge.

A neutron is a particle in an atom with no electrical charge.

An electron is a particle in an atom with a negative electrical charge.

An atomic nucleus is the centre of the atom; it consists of protons and neutrons.

An atomic number is the number of protons in an atomic nucleus; it defines the relative position of an element in the periodic table, in which the elements are arranged in accordance with their nuclear charge increase.

Решение.

Решение 2.

7 Поработайте в парах. Прочтите химические термины и их определения. Предложите для них русские эквиваленты.

Ответ:

Matter	Материя / Вещество
An atom	Атом
A chemical element	Химический элемент
A molecule	Молекула
A proton	Протон
A neutron	Нейтрон
An electron	Электрон
An atomic nucleus	Атомное ядро
An atomic number	Атомный номер / Порядковый номер