Chemical Reactions and Their Types

The video tutorial explains chemical reactions, focusing on decomposition reactions. It describes the types of chemical reactions: combination, decomposition, displacement, and double displacement. The experiment aims to observe the effect of heat on ferrous sulphate crystals, identifying it as a decomposition reaction. The procedure involves heating ferrous sulphate, observing color changes, and noting the formation of ferric oxide, sulphur dioxide, and sulphur trioxide. The video concludes with safety precautions, emphasizing the importance of avoiding inhalation of harmful gases.

What is the term used for substances that are transformed during a chemical reaction?

• Inhibitors

• Catalysts

• Reactants

• Products

Which type of reaction involves two or more substances combining to form a new compound?

• Combination reaction

• Double displacement reaction

• Decomposition reaction

• Displacement reaction

In a decomposition reaction, what happens to a single compound?

• It forms a new compound with exchanged ions

• It breaks down into simpler substances

• It combines with another compound

• It replaces an element in another compound

Which of the following is not a type of chemical reaction discussed?

• Combination reaction

• Displacement reaction

• Decomposition reaction

• Synthesis reaction

What is the aim of the experiment involving ferrous sulphate crystals?

• To test the purity of the crystals

• To observe a combination reaction

• To classify the reaction type

• To measure the temperature change

What color change is observed when ferrous sulphate crystals are heated?

• White to brown

• White to green

• Green to white

• Brown to green

What is formed when anhydrous ferrous sulphate is further heated?

• Sulphur trioxide and water

• Ferric oxide and sulphur gases

• Sulphur dioxide and water

• Ferric oxide and water

What is the final product labeled as after the experiment?

• Ferric oxide

• Sulphur dioxide

• Sulphur trioxide

• Anhydrous ferrous sulphate

What should be used to hold the test tube while heating?

• Spatula

• Bare hands

• Tongs

• Test tube holder

Why should inhalation of sulphur dioxide and sulphur trioxide be avoided?

• They cause difficulty in breathing

• They have a pleasant smell

• They are flammable

• They are non-reactive