Презентация, доклад по английскому языку Периодическая система

Obvious
Compose
Row
Sudden
Shell
Interact

Периодичность
Отношение
Уменьшать
Интересоваться чем-то
Устройство. приспособление
Периодическая таблица
Организовывать
Атомный вес
Предсказать, предположить
Свойства
Очевидный
Составлять
Ряд
Внезапный
Оболочка
Взаимодействовать

you want to find out information about something.
When a proper/strict/formal attempt is made, it is done officially.
If something occurs gradually/suddenly/rarely, it happens over some time.
When two things relate/interact/determine, they react to one another.
The word specific/detailed/thorough means exact.
If there is reappearance/occurrence/repetition, the same thing is done many times.
A shell/nucleus/atom is the hard outer part of something that protects what is inside.
If somebody predicts/notices/impresses something, they say what they think will happen in the future.
If you are discovered/based/impressed by someone, you admire them.

periodic tables in the same year.
3. Modern periodic tables use atomic weight.
4. Protons are found in shells.
5. Sometimes we can find ten electrons in the second shell.
6. The chemical make-up of an element depend on the outer shell.

Read the text and decide if the following statements are true or false.

do you enjoy the most?
Do you know the English names for any laboratory equipment?

of students and choose the best answer A,B or C.
To ensure safety in a lab student should
A have short hair
B wear special shoes
C protect their clothes and eyes
2. If somebody spills a chemical on their skin, they
A will definitely need a first aid kit
B should place it under cold, running water
C should use the emergency cupboard
3. Check chemical labels twice because
A it’s easy to choose the wrong one
B the names are basically numbers
C the formulae depend on letters
4. Dangerous substances
A are only bases and acids
B can burn you
C are easier to spill
5. Another rule in the lab is
A avoid running unless necessary
B the teacher must present all experiments alone
C clean and tidy up at the end of class