Which one of these is a chemical change °twinkling of stars
cooking of vegetables
cutting of roots
boiling of water

Cooking of vegetables

Explanation:

Change may refer to transformation or alteration of form which could take place in organisms, humans, animals and various other substances. The type of transformation which organisms or materials undergo is used in classifying change in to either of chemical, physical, biological and so on. Physical change usually has to do changes in size and form without any alteration on the chemical identity of an element. However, chemical changes has to do with chemical reactions which leads to the formation of new products, As a result, chemical changes are usually not reversible. A cooked vegetable cannot be charged back into its prior form.

Boiling of water, cutting roots are physical changes.

multiplying and dividing the two decimals and the eqations by the same number of the overalls