How are metals identified i the periodic table??

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

Could we see a galaxy that is 20 billion light-years away?

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.