How Would You Cause An Endothermic Chemical Change To Begin And Keep Going
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Changes in Matter
Affiliate 2 Section 3 Physical Science
| question | reply |
|---|---|
| Physical Change | A change in a substance that does non modify its identity. |
| Chemical Change | A change in which one or more substances combine or break autonomously to form new substances. |
| Law of Conservation of Mass | The principle that the full amount of matter is neither created or destroyed during a chemic or physical alter. |
| Energy | The ability to do work or cause change. |
| Temperature | A measure of the boilerplate free energy of motion of particles of a substance. |
| Thermal Free energy | The total potential and kinetic energy of the particles in an object. |
| Endothermic Modify | A modify in which energy is taken in. |
| Exothermic Change | A alter in which energy is given off. |
| Why is the melting of an ice cube called a physical change? | When an ice cube melts, it is nonetheless water. |
| Why is combustion classified as a chemical alter? | Combustion involves the rapid combination of a fuel with oxygen to produce new substances. |
| Place three different kinds of physical change that could happen to a plastic spoon. | bend the spoon, break it in pieces, and cook it. |
| Which of the following processes is not a concrete change; drying moisture clothes, cutting snowflakes out of paper, lighting a match from a matchbook? | lighting a match is not a physical change. |
| What bear witness would y'all wait for to determine whether a chemical change has occurred? | If a new substance is formed, a chemical change has occurred. |
| Why is the electrolysis of water classified as a chemical change but the freezing of h2o is not? | in electrolysis, water is broken downwards into hydrogen and oxygen ,two unlike substances. When water freezes, it is the aforementioned substance, merely in a different course. |
| Explain why the mass of a rusted nail would be greater than the mass of the smash earlier it rusted. Assume that all the rust is still attached to the nail. | During rusting, oxygen in the air combines with iron in the smash. The rusted smash has atoms of oxygen that the nail did non have before it ruted. |
| What is thermal free energy? | Thermal energy is the total energy of all the particles in an object. |
| How can y'all tell whether one drinking glass of h2o has more thermal energy than another, identical drinking glass of water? | If the temperatures are different, the glass of water with the higher temperature has the greater thermal energy. |
| How might you lot cause an endothermic chemical change to begin and keep going? | You take to add thermal energy. |
Source: https://www.studystack.com/flashcard-1674009#:~:text=How%20might%20you%20cause%20an,have%20to%20add%20thermal%20energy.
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