D. Answer in one word.
1. The kind of change in burning of a substance.
2. The kind of change in rusting of iron.
3. A metal which burns with a dazzling white flame.
4. One method which can prevent rusting.
Answers
chemical change
chemical change
magnesium ribbon
Coat it with Oil - Use of oil or grease significantly reduces the chances of developing rust in iron. Basically, oil or grease form a protective layer over iron just as paint does and therefore prevent rust formation.
Answer:
1.The five-year plans for the development of the national economy of the Union of Soviet Socialist Republics .
2.Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.
3.Magnesium tarnishes slightly in air, and finely divided magnesium readily ignites upon heating in air and burns with a dazzling white flame. Normally magnesium is coated with a layer of oxide, MgO, that protects magnesium from air and water.
4.Coat it with Oil - Use of oil or grease significantly reduces the chances of developing rust in iron. Basically, oil or grease form a protective layer over iron just as paint does and therefore prevent rust formation.