Real-life experience 1-1 to 1-3
From the lessons we have tackled from 1-1 to 1-2, I learned so much, and these
lessons can be applied to our daily lives. There are three phase changes: solids, liquid,
and gas. We have been experiencing these phases daily, and we may or may not notice
it. One example is the transition from solid to liquid to melting, which occurs when ice
melts into water. Another example is the transition from liquid to solid, which occurs
when rain turns into solid ice, also known as sleet. Other changes such as
vaporization/condensation and sublimation/deposition are also common pairs of phase
change. These changes are happening all around us.
Furthermore, we are always exposed to humidity, particularly in a country
located in the sun's belt. The vapor pressure of water in the atmosphere can be
expressed as the relative humidity. We experience this every day whether it’s cold or
hot.
Understanding vapor pressure is important in fields such as chemistry, physics,
and engineering, as it helps explain phenomena like boiling, evaporation, and the
behavior of gases. One example is the pressure cooker in the kitchen appliance that
utilizes vapor pressure to cook food quickly. By sealing the cooker, the steam generated
from boiling water inside increases the pressure. This will help our cooking time a bit
faster and to tender the meat.
Real-life experience 1-4, 1-7
I learned so many new things from these lessons. One thing that is new to me is
that the water does not come from Earth but comes from comets and asteroids from the
edges of our solar system. Three-quarters of the globe is covered by the oceans and vast
ice sheets cover the poles. We all know that water is essential in our daily lives as our
body needs liquid to function all over our body.
One example of these lessons is the types of solids that are present in this world.
There are ionic, metallic, molecular, network, and amorphous solids. These solids are
essential in determining how old the earth is so that we can be prepared for whatever
comes next. For example, scientists can predict when the next lava eruption will occur
or when heavy rain will fall again.
Furthermore, another example is a rock. This rock is not just any ordinary rock
that we can see in the streets but the type of rock that contains a heavy bond. This
bonding will result in a great opportunity to sell these and turn them into something
valuable such as jewels or accessories.