Adrian loves to eat tuna, and she always shares a little bit of tuna with her cat Athena. Whenever Adrian opens a can of tuna, Athena comes running into the kitchen. What is this an example of?

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.

answer: gold foil experiment - he shot alpha particles at a gold foil

explanation: