Julian's chemistry blog

The question we were trying to answer was what are the identities of the unknown solutions. We were supposed to do this by figuring 7 known solutions with the flame test and then decide what solution was the unknown. During our investigation, we turned a bunser burner to an inner blue flame and we had toothpicks with solutions in the seven known solutions were calcium chloride, barium chloride, copper chloride, lithium chloride, potassium chloride, strontium chloride. The other four unknown solutions were one of those. We conducted a flame test in this stuff because each element has the different amount of electrons an when the electrons get excited they absorb the energy and when they go back to ground state the electrons release energy in the form of light. So every element has its own different shades of color when exposed to a flame test. Data elements flame color Calcium Cholride Dark Orange Barium Chloride Yellow & Green Copper Chloride Green & Blue

The guiding question of this lab: What is the atomic mass of beanium? What I did during these lab was first i did this graph: Data Type of Bean Total number Total  Mass Average Mass Percent Limium 5 7.0g 1.4g 10% Kidneyum 15 8.0g 0.53g 30% Peagen   30 6.5g .22g 60% Then i got the mass of the total number of limium then i averaged it. Then repeated this for kidneyum and peagen. Then figured out there percentages. With the formula P/Wx100=%. Then i followed another formula to get the atomic mas for beanium, the formula was #1 average mass x 10% + #2 average mass x 30% + #3 average mass x 60% divided by 100. Which the answer was 0.431 g for the atomic mass for beanium. That's how I did this lab.

This was do a Friday and i didn't do it but now its here yay.      What i did in that  week was learning about chemical and physical changes we did labs to see the difference between the both were. what i learned was that a change in state is a physical change and for it to be a chemical change it has to get in mix with acid,fire,or two liquids turn into a solid (perspitant). What i did to improve in these subject was learn the basic things that made a chemical change and what made a physical change and examples of those.