Ex. 3 Remake the following sentences using comparative constructions as..as and not as..as For example: Magnesium is brittle. Copper is brittle too. Magnesium is as brittle as chromium.
Magnesium is brittle but copper is not brittle. Magnesium is not as brittle as chromium.
1. Reduction process is as difficult as oxidation process.
2. Redox reactions are not as electron-gaining as organic reactions.
3. Nucleophillic regions are as electron – excessive as electrophillic regions .
4. Bronsted acids are not as hard soluble as Lewis acids.
5. Manganese is not as slightly-soluble as magnesium.
6. Hydrochloric acid is not as strong as boric acid.
7. Sulfuric acid is as weak as boric acid.
Ex. 4 Put in as or than 1. than
2. as
3. than
4. as
5. than
6. than
7. as
Ex. 5 Put the questions to the bold-typed words 1. We often write redox reactions in this way.
a. Who often writes redox reactions in this way.
b. What do you often write in this way?
c. How do you often write redox reactions?
2. Organic reactions occur at high temperature.
a. What reactions occur at high temperature?
b. At what temperature do organic reactions occur?
3. Yesterday we reduced these species.
a. When did you reduce these species?
b. Who reduced these species yesterday?
c. What did you reduce yesterday?
4. Nucleophillic regions have an excess of electrons. a. What regions have an excess of electrons?
b. What do nucleophillic regions have?
5. Another key concept in organic reactions is Lewis basicity. a. What is another key concept in organic reactions?
6. Magnesium loses electrons.
a. What loses electrons?
b. What does magnesium lose?
7.This element changes its colour when it burns.
a.What changes its colour when it burns?
b. What does this element change when it burns?
