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Heat being added or taken away from a substance may cause?
more or less heat
What has to be taken away to change water into ice?
The freezing point of water is 0 C (32 F). The difference between a liquid and a solid is the space between the atoms. To become more dense (a solid) the orbit of the electrons has to become less. This requires losing energy. As energy cannot be made or destroyed, it has to be transferred. This removal of energy is the removal of heat.
How are a melting point and a freezing point the same?
Melting and freezing points are the same because a substance at a certain point can either freeze or melt. If energy is taken away from the compound, it will freeze. On the other hand, if energy is added, it will melt. This energy is called the heat of fusion.
Why do substance s expand when energy is added to them as heat?
When heat is added to a system, it increases the kinetic energy of the molecules. Increased K.E in system causes molecules to move further away from each other. This causes system to increase in volume. Significant increase in volume might not occur but at microscopic level it definitely changes.
The change of water from a gas to a liquid?
The process of changing liquid water into a gas is called evaporation. Energy is added to the liquid water - generally in the form of heat. When enough energy is added, it allows the most energetic molecules at the surface of the liquid to break free of the liquid and enter the gas phase. The more energy that is added, the more water molecules will have enough energy to move into the gas phase. If enough energy is added, all the molecules will leave the liquid and from then on adding energy will just make the gas warmer. Another way to change liquid water into gas is to drop the pressure above the liquid. In this case, it takes less energy for the molecules in the liquid to get away from the liquid so some of them will already be energetic enough to get away. Any mass of liquid water will have a range of energies for the molecules, some will be low energy, others high energy with each collision between the molecules, they either gain or loose energy. If they gain enough energy, they can become energetic enough to escape the liquid as a gas. The higher the pressure, the more energy is required to become a gas. If the liquid water is in contact with some gas - air for example. The liquid will evaporate until the gas is saturated with water vapor. At that point the rate of water molecules dropping out of the gas back into the water (because they don't have enough energy to stay in the gas) is equal to the rate of water molecules escaping from the liquid to become gas. This point is also known as "equilibrium".
What must be added or taken away in order for matter to changes states?
Energy must be added or taken away.
What happens is energy is taken away from matter?
When thermal energy is taken away from matter particles move more slowly. When thermal energy is added to matter particles move faster.
What happens when energy is taken away from matter?
The substance's particals will start slowing down and come closer together. As kinetic energy is removed from a substance, it will do the opposite as when kinetic energy is added to a substance.
What happens when energy is taken away?
What happens when thermal energy is taken away
What happens if energy is added or taken away from a glass of ice water?
That depends on how much energy, but simply:added, more ice melts to water - if enough is added all the ice will melt and the temperature risestaken away, more water freezes to ice - if enough is taken away all the water wii freeze and the temperature will dropAs long as there is both ice and water the temperature will hold constant.
What things are added or taken away from the digestive system?
Taken away: Gastric Juices Poop Urine Gas expelled from the stomach through the mouth Some nutrients are taken away from the digestive system through the anus. Added: Food Nutrients Liquids
What has to be taken away to turn water into ice?
energy
Is heat taken away or added in evaporation?
Heat is taken away during evaporation. As the liquid absorbs heat from its surroundings and gains energy, some of the molecules at the surface of the liquid gain enough energy to overcome the intermolecular forces holding them together, and they escape into the gas phase. This process removes heat from the remaining liquid, causing it to cool down.
What is the difference between positive and negative work?
Positive work occurs when a force is applied in the same direction as the displacement of an object, resulting in energy being transferred to the object. Negative work occurs when a force is applied in the opposite direction of the displacement, resulting in energy being taken away from the object.
What state is liquid in when energy is taken away from it?
When energy is taken away from a liquid, it can transition into a solid state through a process called freezing or solidification. This is because the decrease in energy causes the molecules in the liquid to slow down and come together to form a more ordered and rigid structure, characteristic of a solid.
Is heat taken away or added in sublimation?
Sublimation is an endothermic physical change (heat is needed).
Heat being added or taken away from a substance may cause?
more or less heat
