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Chemical to heat to chemical to motion
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∙ 13y ago
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What energy changes are involved when an electric light shines?
electric energy changes to light & heat energy when light shines.
What is always involved when physical or chemical changes occur in matter?
Energy is ALWAYS invoved.
Can you give me some examples of chemical changes and physical changes involved in the use of household products?
Chemical : cooking (not heating [especially in the microwave]). Physical : making ice cubes.
Which type of chemical and positive changes you observe in daily life?
One type of chemical that we encounter daily is water (H₂O). It undergoes several positive changes such as cooling us down when we sweat, hydrating our bodies, and providing a medium for cooking or cleaning. Additionally, combustion reactions involving fuels like gasoline or natural gas produce energy that powers our vehicles and heats our homes, leading to positive changes in transportation and comfort.
Explain the energy changes involved when a positive charge moves because of a nearby negatively charged object?
That's similar to when an object falls in a gravitational field: potential energy is converted into kinetic energy.
What energy changes are involved when an electric light shines?
electric energy changes to light & heat energy when light shines.
How is energy involved in state changes?
cuz it just is!
Is it true that energy changes only take place involved with chemical changes?
Yes Energy Kills you stay away from it
Which energy is used for heating of food and why?
Heat energy is used for food cooking. It work as temperature changes.
What is the description of chemical reactions involved in cooking when cooking requires continuous addition of energy to the chemical reactions?
endothermic reaction
Is energy always involved in physical or chemical changes?
Yes
When energy changes from one form to another often involved?
heat
What state changes when you cook something on the stove?
Cooking is a chemical change; but some physical changes may be involved: de freezing, liquefaction, evaporation.
Why do we say that chemical reactions always involve changes in energy?
Because they do. In fact, you can't get ANYTHING done without some energy changes involved.
Is energy change only involved with chemical change?
Energy changes are possible also in other situations.
What describes the energy changes involved in an ecosystem?
The sun's energy is made available to an ecosystem by the plants in that ecosystem.
What is always involved when physical or chemical changes occur in matter?
Energy is ALWAYS invoved.
