One day resets went to ajeweller s shop with her mother. her mother gave an old gold jewellery to gold smith to polish. next day when they brought the jewellery back they found that there is slight loss in weight. can you suggest reason for loss in weight.

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.