Two jars are placed on a counter with a mcdonald's french fry inside, one has a lid, the other does not. they are left alone to see which one decays faster, after 2 days the fry in the closed jar looks fresher. what is the independent variable? what is the dependent variable? what is the control variable?

where are the choice options?

elements make up everything, and they combine to make compounds.

the answer is c

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.