1. place the elemental powders of barium (Ba), calcium (Ca), copper (Cu), potassium (K), lithium (Li), sodium (Na), and strontium (Sr) on the table2. place 7 ceramic bowls for the elements on the table3. place the alcohol swabs on the porcelain bowls4. place the elemental powders of barium (Ba), calcium (Ca), copper (Cu), potassium (K), lithium (Li), sodium (Na), and strontium (Sr) in the ceramic bowls5. light the igniter to ignite the elements and observe the color of the flame for each element6. place the strontium (Sr) on the firecracker launcher and ignite it7. Observe the color of the firecrackers
