1. Reaction of acids with metals (原曲：小飛俠）（寫於2016-17年度）
Some metals react with a diluted acid,
Magnesium is one of them,
During the reaction a gas is produced
It is hydrogen gas
A salt is produced as well
The metals start to shrink in size
Or they will even be
Eventually dissolved,
However there is exception of this case,
Some metals do not react
With most kinds of diluted acids,
Copper is one of them,
However copper does react,
With any kind of nitric acid,
So it can produce nitrogen
Dioxide gas and salt!
2. How can we ease climate change? (原曲：超人的主題曲）（寫於2016-17年度）
*How can we slow down emitting
Of greenhouse gas in the air?
We can save energy in order,
Burn less fossil fuels,
Use renewable energy resources,
Like solar and wind power,
Keep the air clean, so as to lower
Ozone in the air!
Stop making products that have
Chlorofluorocarbons,
Practise waste separation and recycling,
Is also a good way,
Reduce methane from landfills,
Less energy and trees are needed for making
New products, then we can solve the
Climate change problem!
（重唱*）
Cut fewer trees and plant more trees,
Keep the oceans clean,
Plant plankton can grow better,
CO2 is gone,
We can remove all the
Excessive greenhouse gas from the earth’s atmosphere,
Let’s do this, then we can solve the
Climate change problem!
3. Definition of landslides （原曲：幸福在這裡）（寫於2017年12月）
1. Landslides refer to sudden and rapid movement of soil,
Or any kind of rock, from any one of the slopes.
It damages water pipes, gas pipes and power lines,
Slope materials will block roads, and stop all traffic.
2. Shear strength holds materials together, with cohesion and friction,
Shear stress acts to pull things down under the gravity.
If the shear strength is greater, the slope is stable,
If the shear stress is greater, it's unstable and it will collapse.
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