Which of the following is not a physical change?
dissolving salt in water
baking a cake
melting wax
freezing water

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

How many atoms are there in 5.70 mol of mg

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.