Energy Changes
12 important questions on Energy Changes
What is an endothermic reaction?
How does a disposable hand warmer work?
How does a a reusable hand warmer work?
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What is activation energy?
Bond energy calculations
2) look at the table and determine how much energy is required
What are the main parts of a battery?
How do batteries work?
Why do batteries need different materials?
What is the difference between primary and secondary cells?
What are the advantages of hydrogen fuel cells?
no pollutants
range of sizes for different uses
What are the disadvantages of hydrogen fuel cells?
hydrogen sometimes produced by non-renewable sources
difficult to stop hydrogen
What is a battery?
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