Поставьте следующие предложения в пассивный залог:Chemists call these compounds metals

Поставьте последующие предложения в пассивный залог:
Chemists call these compounds metals These compounds are called metals by chemists.
1.They discussed the results of the reaction yesterday. 2. We prepare sodium salts from the carbonate or hydroxide. 3. They spoke much of the problem. 4. A discussion will follow the lecture. 5. They will comment upon new data in this article. 6. We began the experiment in the morning. 7. The great affinity for oxygen distinguishes the metals.