Task 1: Physical characteristics chart (Knowledge and Understanding)
In a table, list the physical characteristics of the elements hydrogen (H) and nitrogen (N), and the compound ammonia (NH3). Remember that this includes what they look like, their melting point, their boiling point, and their state of matter at room temperature.
Then, describe what is similar and what is different between the two elements and the compound (NH3).
Task 2: Bohr-Rutherford model of chemical bonding (Knowledge and Understanding)
Using the periodic table, draw Bohr-Rutherford Diagrams of each of the elements (one atom) before bonding. Then draw the NH3 molecule indicating all the shared electrons as either dots or crosses (as Xs), paying close attention to the valence electrons. Indicate whether the formation of ammonia is an ionic or a covalent bond and explain your reasoning.
Task 3: Using chemicals safely (Application)
Safety measures need to be taken when experimenting with compressed hydrogen (H) and nitrogen (N). Ammonia is produced by the Haber process which uses hydrogen gas from methane (CH4). What WHMIS symbols would you see on the containers of hydrogen gas, nitrogen gas and methane gas? What safety precautions would an individual need to take when handling these chemicals?
Task 4: Cost-benefit analysis (Thinking and Communication)
Use this “Public Health Statement for Ammonia,” taken from the Agency for Toxic Substances and Disease Registry (ATSDR) website, to create a cost-benefit analysis to answer the following question: Given the potential risks of ammonia, are household cleaners containing ammonia safe to use
