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What else can I help you with?
How can you tell that the melting of ice cube is a physical change?
You could test the resulting liquid by determining its boiling point and melting point. If they are the same as the boiling and melting points for water, then it is probably water and a physical change rather than a chemical change has occurred.
How does the way the water changes from one state to another compare to the way other subtances change?
The energy density is higher than for other materials, and water has an anomalous density change right around the freezing (melting) point.
How are melting and evaporating different?
First, melting is the phase change of solid to liquid and evaporation is the phase change of liquid to gas. Second, Evaporation requires more energy than melting. Evaporation, heat of vapoization constant, is 2260 J/g. Melting, the heat of fusion constant, is 334 J/g.
Why is melting of butter is a physical change whereas rusting of almirah is a chemical change?
Melting of butter is a physical change because it involves a change in state from solid to liquid without altering the chemical composition of the butter. Rusting of an almirah is a chemical change because it involves a reaction between iron in the almirah and oxygen in the air to form a new substance, iron oxide, which has different properties than the original iron material.
What is the balanced equation for heating potassium chloride?
There is no reaction (decomposition) when KCl is heated, other than the melting of KCl, above its melting point.
Why melting point of diamond is higher than that of silicon carbide?
Diamond is a covalent network solid, and those types of compounds have higher melting points than other types of compound.
Does the tempura change when the substance is changing state?
Yes, the temperature of a substance can change when it undergoes a state change, such as melting or boiling. During these phase transitions, the temperature remains relatively constant as the energy added or removed is used to break or form intermolecular bonds rather than increase the temperature. For example, during the melting of ice to water, the temperature remains at 0°C until all the ice has melted.
How does the melting point f solder change with the amount of tin in the solder?
The melting point of solder generally decreases as the tin content increases. This is because tin has a lower melting point than other common soldering materials, such as lead. An increase in tin typically leads to a more fluid and lower melting alloy, which can be beneficial for soldering applications. However, the exact melting point can also depend on the specific composition of the solder alloy.
What is the difference between an ice cube melting and the polar caps melting?
An ice cube melting is the process of solid ice turning into liquid water due to an increase in temperature. The polar ice caps melting refers to the large masses of ice at the Earth's poles (Arctic and Antarctic) melting and contributing to rising sea levels, which has significant implications for global climate change.
What must the melting point of the mold be compared to the temperature at which glass gets soft and why?
The melting point of the mold must be higher than the melting point of glass, or else it would not be able to hold the soft glass in the correct shape.
Why does the temperature stay the same during a state change?
During a state change, such as melting or boiling, the energy being added or removed is being used to break or form intermolecular bonds rather than increase or decrease the kinetic energy of the particles. This leads to a plateau in temperature until the state change is complete.
Why would you expect a metamorphic form at a temperature lower than the melting point of a rock?
if rock melts it will form magma, which leads to the formation of igneous rocks
