Chemistry paper 1

• compare the transition metals and the group 1 elements

  physical transition high melting points. high densities. strong. hard. Group 1 low melting points. low densities. soft. chemical group 1 very reactive not used as catalysts. transition not very reactive used catalyst
• compare newland periodic table and Mendeleev

  similarities both tables have more than one element. both table shave similar elements in same column. both not have noble gases. advantages Mendeleev compared to newland. newline not leave gaps for undiscovered elements. Mendeleev changed order of some elements