Braulio's Chemistry blog

On Thursday, October 26, I had to do a lab in my chemistry class. In the lab we had to find identities of unknown solutions by comparing them to the known solutions he had. During this lab we first had to identify the flame that the Bunsen burner makes when it burns certain metals. The metals we used were Calcium Chloride, Barium Chloride, Copper (II) Chloride, Lithium chloride, Potassium chloride, Sodium chloride, and Strontium chloride. The Bunsen burner and the metals made                                                          Calcium- Brighter Orange                                                          Barium- Yellow-Green                                                          Copper(II)- Green-Blue                                                          Lithium- Red                                                          Potassium- Pink-Orange                                                          Sodium- Shadow Orange                                        

These two weeks in Chemistry class we have had labs having to do with chemical and physical change and learned atomic mass of elements and their isotopes. I have learned how to calculate the relative atomic mass of an element with its isotopes with this formula               (Mass # of Isotope 1) (% abundance 1) + Mass # of Isotope 2) (% abundance 2)                                                                        100 To improve the next two weeks I will do my best to turn in my work in their deadlines and take notes the best I can, as well as ask if I am confused or lost in any topic.