Safety in Science — Unit test Answers

This is how krypton appears in the periodic table.

When looking across the periodic table from left to right, which of these groups are the first to contain nonmetals?

Mrs. Franklin loves teaching science and thinks about it all the time. While walking one day, she steps on a warm, fresh piece of used gum. The gum flattens and sticks to her shoe. When she lifts her foot, she sees long strings of gum between her shoe and the sidewalk. She thinks, “What a great demonstration of the properties of metals!”What properties of metals would Mrs. Franklin most likely teach about with this demonstration?

On the periodic table, the elements known as noble gases are all found in

Which element is a metalloid?