1. An unknown element is found and it cracks in half when hit by a hammer. How would you classify this element?
This element could be classified as a Metalloid or Non-metal.
2. An unknown element is a gas. Knowing what you know about the elements on the periodic table, this would most likely be what type of element?
The element is most likely a noble gas, as the majority of gasses in the periodic table are in this category.
3. An unknown element is brittle and conducts electricity. It is most likely what type of element?
Metalloids are brittle and somewhat conductive.
4. How can you differentiate between the atomic # and mass?
The atomic number is how many protons an element has, while the mass is the average number of between isotopes neutrons. The mass is always greater than the atomic number.
