Suppose that you add some solid detergent to the water in a washing machine. Then, you decide that your clothes
are really dirty, so you add more detergent. Is the solution
of the detergent and water now more concentrated or
more dilute? Explain how you know.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

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.