You have just explored the scientific method. now test your understanding.

which of the following best describes a manipulated variable?
a.

it is the variable in a controlled experiment that is changed in the course of the experiment.
b.

it is the variable in a controlled experiment that remains constant throughout the experiment.
c.

it is the variable in a controlled experiment that is measured as a result of the experiment.

I  best belive that is c i havent learnt about this in a while so

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.