CH7 MAGNESIUM OXIDE LAB M NAME_____________PD_____
PURPOSE: Find the % of oxygen in magnesium oxide by experiment.
PROCEDURE: As described by teacher & see p 258-259
DATA:
Mass of empty crucible_________
Mass of crucible and metal__________
Mass of crucible and product_________
CALCULATIONS:
Mass of metal___________
Molar mass of metal_________
Moles of metal __________ work:_______________________
Mass of oxygen _________
Molar mass of oxygen_________
Moles of oxygen ___________ work;________________________
Mass of product__________
Formula of product _________
Molar mass of product_________
Moles of product____________ work:_______________________
% of oxygen in product from lab data: _________ work:
% of oxygen in magnesium oxide from formula: ________ work:
CONCLUSIONS:
Write a word equation and a balanced chemical equation for the reaction. Include states.
Do you think you did the experiment well? Why or why not?
Did it appear that matter was created or destroyed? Why?
When wood burns does it appear that matter is created or destroyed? Why?
Do you think that matter is really created or destroyed? Why? Describe an experiment that could be done to provide evidence for your answer.
On the back of this page, sketch the experiment.