Question

What do these two changes have in common?

an engine using gasoline to power a car
firing a clay pot in a hot kiln
Select all that apply.
Both conserve mass.
Both are caused by heating.
Both are caused by cooling.
Both are chemical changes.

Answer 1

Both changes are caused by heating and are chemical changes.

Step-by-step explanation:

Both changes have in common that they are caused by heating. In the case of the engine using gasoline to power a car, the gasoline is ignited in the engine, producing heat and causing the engine to work. Similarly, when firing a clay pot in a hot kiln, the clay is exposed to high temperatures, which causes it to harden and form a ceramic structure.

Both changes are not related to conservation of mass because in the case of the car engine, the gasoline is burned to produce energy and is transformed into other substances, and in the case of the clay pot, the clay undergoes a physical and chemical transformation, losing water and becoming solid.

Both changes are chemical changes, as they involve the breaking and forming of chemical bonds. In the car engine, the gasoline undergoes combustion, reacting with oxygen to produce carbon dioxide, water, and energy. In the kiln, the firing process causes the clay molecules to rearrange and form new chemical compounds, resulting in the transformation of the clay into ceramic material.

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