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What is the most important quiestion to ask to determine whether a change is physical or chemical?
The most important question to ask is whether the change results in a new substance being formed. Physical changes involve a change in appearance, state, or size of a substance without forming a new substance. Chemical changes involve a reaction that results in the formation of new substances with different chemical properties.
What is the most effective substance for dissolving PETG?
The most effective substance for dissolving PETG is acetone.
What is the most effective substance that dissolves concrete?
Hydrochloric acid is the most effective substance that dissolves concrete.
Identify the most important compound for sustenance of life it would probably be?
Water is the most important compound for the sustenance of life. It is essential for various biological processes such as hydration, temperature regulation, and nutrient transport in living organisms. Without water, life as we know it would not be possible.
What is one substance that is not attacked by corrosive acid?
Gold is a substance that is not attacked by most corrosive acids, including hydrochloric acid and nitric acid. This makes gold a popular choice for jewelry and other applications where resistance to corrosion is important.
