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Coal for example, or any other fossil fuel
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∙ 14y ago
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What is chemical energy?
Chemical energy is that energy contained in a chemical substance that is released when that substance reacts with another substance. For instance there the sucrose molecule stores chemical energy.
What is the chemical substance found in a firefly?
Luciferin, a protein that reacts with oxygen to produce light.
The energy released when a chemical compound reacts to produce new compounds?
This could be a definition of "bonding energy".
Energy released when a chemical compound reacts to produce new compounds?
This could be a definition of "bonding energy".
Contrast Chemical energy and mechanical energy?
chemical energy is when the energy that is released when a chemical compound reacts to produce new compounds. A mechanical energy is the sum of the kinetic and potential energy of large-scale objects in a system.
A combustion reaction occurs when a substance usually containing carbon reacts with what to produce energy in the form of heat and light?
oxygen
What describes how a substance reacts with another substance?
Chemical reaction
What is a substance that reacts in a chemical change?
products
What describes how a substance acts when it reacts with other substance?
Chemical equation
What is a characteristic that determines how a substance reacts?
chemical change
A reaction occurs when a substance reacts with oxygen to produce energy in the form of heat and light?
This is an oxidation reaction (combustion, burning).
Why the melting point of a substance is a physical property but flammability is a chemical property?
When a substance melts, it changes state from solid to liquid. This does not alter the substance's chemical composition, so melting point is a physical property. Flammability means burning, and when a substance burns, it reacts with oxygen to produce a new substance that was not there before. This is therefore a chemical property.
