(i) The preparation of cold drink soda- lemon is a physical change.

Question

State whether the following statements are True or False. (If a statement is false, correct it and rewrite it.)

(i) The preparation of cold drink soda- lemon is a physical change.

(ii) Hard water contains the chloride and sulphate salts of calcium and magnesium in dissolved state.

(iii) Combustion of fuel is a fast and irreversible manmade chemical change.

(iv) Photosynthesis reaction is a man-made chemical change.

Answer 1

(i) False. [The preparation of cold drink soda-lemon is a chemical change.]

(ii) True.

(iii) True.

(iv) False. [Photosynthesis reaction is a natural chemical change.]