Target: Take what you know about conservation (of atoms) and chemical properties of elements to describe and predict chemical equations
Target: Take what you know about conservation (of atoms) and chemical properties of elements to describe and predict chemical equations
Essential Question:
What are electrolytic and voltaic cells, and what are their similarities and differences?
What I Know...(type your answer in blue)
Watch the engage video: Electrolysis Reveals Water Is Not Elemental
How did early chemists discover water was not elemental?
According to the video "Fuel Cell" how does a fuel cell work?
According to the video "Fuel Cell" people are concerned about the safety of compressed hydrogen because it can explode (combustion reaction). Researchers have found a new way to soak up hydrogen like a sponge, so you don't have to compress it. What is the new material that can safely store hydrogen and avoid the risk of explosion?
According to the video "Chemicals and Electricity", what element did Humphry Davy isolate by running electricity through melted potash?
Li -> Li+ + 1e-
Fe2+ + 2e- -> Fe
Al -> Al3+ + 3e-
Cu2+ + e- -> Cu+
Mg2+ + 2e- -> Mg
oxidation reaction
reduction reaction
Which of the following describe the following electrochemical cell? (Hint: Anode is the electrode where oxidation reaction takes place, and in the cathode, reduction takes place) (Hint#2: Anode is the electrode where electricity moves into the external circuit, and cathode is the electrode where electricity is given out)
What does it mean when they say that oxidation-reduction reactions in voltaic cells are spontaneous?
What do they mean by 'an otherwise non-spontaneous chemical reaction'?
What external path are the electrons flowing through in this voltaic cell?