Предмет: Химия, автор: vionavinaqwq

Пожалуйста помогите!
Складіть формулу силікатної кислоти, якщо й молекула складається з двох атомів Гідрогену, одного атома Силіцію та трьох атомов Оксигену

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Автор ответа: vgusyak44

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H2SiO3 формула силікатної кислоти

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NAME:................................................................................................. DATE:..............................

CLASS:............................................................................................. MARK:.................................

Vocabulary

A Fill in the correct word.

● fireworks ● special dish ● gardening ● flowers ● costumes ● celebrate

● dusting ● phone ● decorations ● homework

e.g. Everyone’s getting ready to celebrate the New Year’s Day.

1 At Halloween, we all wear strange ..............................................
2 Sam is doing the ......................He loves plants and flowers.
3 She loves to watch the ................. in the sky on Guy Fawkes' Night.
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6 The room looks lovely with all the ………………….
7 Can I make a .............................................. call?
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9 I’m sorry. I can't go out tonight because I'm doing my...................
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11 It’s your turn to do/make the dusting.
12 He doesn’t want to do/make the washing-up
13 Help your dad do/make the shopping.
14 Mum is doing/making a special dish.
15 They are doing/making wreaths.

C Choose the correct item.

16 On St. Patrick’s Day, we like to ............the parade.
A listen B watch C eat

17 This is a great game. Why don't you ..............in?
A join B go C come

18 After the party you can help me to..............
A work B take C clean

19 It’s great fun when we ... gifts.
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20 Let’s play a game of ........................ chairs.
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Grammar

D Underline the correct word.

21 He is/are washing the car.
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F Put the words in the correct order to make sentences.

31 is/wearing/what/she?...............................................................................

32 watching/not/Susan/is/a/film.................................................................................

33 you/enjoying/your/holiday/are?...............................................................................

34 is/drums/not/Cynthia/today/playing/the.................................................................................

35 the/eating/are/wh/ not/sandwiches/ they?...............................................................................

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36 What do you think of the party? ...... B No, not really.

37 Are you doing anything at the moment? ...... C It's brilliant.

38 What do you have in mind? ...... D Yes, please. I have it ready.

39 What are the sandwiches like? ...... E They're horrible.

40 Would you like to include a card? ...... F Yes, we are.

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H Read the text and answer the questions.

This a picture of my brother at his birthday party. His name is Paul and in this
picture he is wearing his favourite T-shirt and a party hat. Our house is full of
decorations and Paul is having a great time. He is blowing a party horn and drinking
some orange juice. His friends are eating sandwiches and everybody is listening to
happy music. You
20:52:51
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41 What kind of hat is Paul wearing?...............................................................................

42 What is Paul doing?................................................................................

43 What are Paul's friends eating?...............................................................................

44 What is everybody listening to?................................................................................

45 Where are Paul's parents?...............................................................................

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