Properties of Matters and Changes

Question 1

Chemical

Answer 1

change in the arrangement/combination of the atoms in a substance (change in identity of the
substance).

Ex: Flammability, Combustibility, Tarnishing, Reaction with another substance
Ex: Fe(s) + O2(g) > Fe2O3(s)
This example is elements undergoing a chemical change to form a compound.

Question 2

Physical

Answer 2

characteristics or processes that can be observed without changing the identity of the substance
(arrangement of atoms). Involves the form or appearance of the substance.

Ex: color, texture, density, state of matter, odor, compressibility, solubility

Ex. H2O(s) > melting > H20(l)
This example is a compound undergoing a physical change