a piece of silver is observed to be scratched bent and coated with tarnish. which is the chemical change?

the answer is definitely c.

a) the particles of the chair are strongly held together.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.