Предмет: Химия, автор: poterbamilana99

1. Напишите уравнения реакций взаимодействия калия, кальция, магния, алюминия, цинка с кислородом.

Ответы

Автор ответа: borisova040494
0

Объяснение:

приветик

Взаимодействие металлов с кислородом обычно приводит к образованию соответствующих оксидов. Вот уравнения реакций взаимодействия некоторых металлов (калий, кальций, магний, алюминий и цинк) с кислородом:

1. Калий (K) + Кислород (O2) -> Оксид калия (K2O)

Уравнение: 4K + O2 -> 2K2O

2. Кальций (Ca) + Кислород (O2) -> Оксид кальция (CaO)

Уравнение: 2Ca + O2 -> 2CaO

3. Магний (Mg) + Кислород (O2) -> Оксид магния (MgO)

Уравнение: 2Mg + O2 -> 2MgO

4. Алюминий (Al) + Кислород (O2) -> Оксид алюминия (Al2O3)

Уравнение: 4Al + 3O2 -> 2Al2O3

5. Цинк (Zn) + Кислород (O2) -> Оксид цинка (ZnO)

Уравнение: 2Zn + O2 -> 2ZnO

Во всех этих реакциях металлы реагируют с кислородом, образуя соответствующие металлические оксиды.

Похожие вопросы
Предмет: Английский язык, автор: aktif
помогите пожалуста
ХЕЕЕЕЕЕЕЕЕЕЕЕЕЕЕЕЕЕЛЛЛЛЛЛЛППППППП
Дам еще 50 за правельний ответ!!!


1. Complete the sentences with the words in the box.
Spoon , sightseeing ,famous, important , captain, married, crowded, frightening
1. Can I speak to Mrs Drake, please? It’s_________ .
2. Let’s get the next bus. This one is really________ .
3. I need a_________ to eat my ice cream.
4. The________ never shouted at his sailors.
5. That dinosaur in the museum was quite_______ .
6. In the past, people got_________ very young.
7. My cousin is an actor but he’s not very_________ .
8. Let’s go ___________. I really want to see the city
2. Circle the correct words
1. Don’t forget / mind to give me my CDs, OK?
2. That film was cool / awful. I want to see it again.
3. Kevin, come into my office actually / immediately!
4. There’s a lot of hiking / traffic in the city centre on weekday mornings.
5. Harold started working at / on the age of sixteen.
6. Let’s take / get off at the next station.
7. Nancy usually goes to the gym by / on foot.
8. Guess what! We did an experience / experiment at school today.
3. Complete the sentences with the Past Simple of the verbs in brackets.
1. Andrew¬¬¬¬_______ (fall) off a camel when he was on holiday and he ______(not be) happy. 2. My mum_______ (not can) drive when she _____(be) eighteen. 3. My aunt and uncle______ (go) on a cruise around the Caribbean last spring. 4. When_____ (be) your parents born? 5. Stuart_______ (manage) to win the competition. 6. I______ (not feel) well yesterday so I _____(leave) school early. 7. When___ Helen_____ (travel) abroad?
4. Circle the correct words.
1. Kevin and Fiona bought a van last yesterday / week. 2. I’m not going on a three-week voyage with his / him! 3. My mother watched a 3D film and her / she really enjoyed it. 4. Mrs Kilburn arrived about two hours ago / last. 5. People often use chopsticks in Chinese restaurants but I can’t use it / them.
5. Complete the sentences with the adjective given or its adverb.
1. I don’t want Susan to drive me to school. She drives________ . (terrible) 2. That’s a ________(wonderful) idea! 3. Henry usually arrives_______ (early) on Monday mornings. 4. Jason went into his sister’s room ________(quiet) because he wanted to surprise her. 5. This test is very______ (easy).