Chemisty work - finding elements I need help !

The first element on the periodic table of elements is carbon. a. true b. false

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process