| A | B |
|---|
| periodic | Describing a regular, repeating pattern, such as the periodic table of the elements or the periodic phases of the moon |
| luster | A property of metal that enables it to reflect light from the surface |
| metalliod | An element that has the properties of both a metal and nonmetal-in the periodic table they border both sides of the zigzag line(staircase) that separates the metals from nonmetals |
| malleability | The ability to be flattened, bent, and shaped without breaking; a property of metals |
| halogen | Any one of the five elements in group 17 in the periodic table (florine, chlorine, bromine, iodine, and astatine) that can combine with a metal to form a salt |
| ores | minerals containing relatively large amounts of metal compounds(transition metals) |
| group | vertical columns on periodic table-elements within a group have many similar properties because of similar arrangement of electrons |
| period | the seven horizontal rows of the periodic table |
| nonmetals | the upper right hand corner of the periodic table(right of zigzag line or staircase) including hydrogen |
| metals | about 80% of known elements,they occupy the large area left of the zigzag line(staircase) of periodic table |
| rare earth metals | these two rows of elements are separated from the rest of the table to make it a more convenient size |
