# How Much Energy is Needed to Transform Ice into Water and Steam?

• physics1234
In summary, the process of changing ice to water to steam is known as the water cycle, which involves the changing of physical states of water. Ice turns into water when it absorbs enough energy to break the bonds holding it together, resulting in liquid water. As water turns into steam, it undergoes evaporation where the molecules gain enough energy to escape into the air as a gas. The boiling point of water is 100 degrees Celsius or 212 degrees Fahrenheit, which is the temperature at which it turns into steam. Heat plays a crucial role in this process, providing the energy needed for the molecules to change states. Without heat, the water cycle and phase changes would not occur.
physics1234
A 55 g ice cube at 0°C is heated until 40 g has become water at 100°C and 15 g has become steam at 100°C. How much energy was added to accomplish the transformation?

I tried using Q=mL for each change and adding them together.

Q=.055(3.33x10^5)
Q=18315

then

Q=.015(2.26x10^6)
Q=33900

18315+33900= 52215 which is not the correct answer.

You have 55g melting (latent heat of fusion) and 55g warming from 0° C to 100° C and then 15g vaporizing (latent heat of vaporization).

I would recommend using the specific heat capacity (c) for each phase change instead of the latent heat (L). The specific heat capacity takes into account the energy required to change the temperature of a substance, while the latent heat only accounts for the energy required to change the phase of a substance.

The correct equation to use in this scenario would be Q = mcΔT, where Q is the energy added, m is the mass of the substance, c is the specific heat capacity, and ΔT is the change in temperature.

For the first phase change from ice to water, the equation would be Q = (0.055 kg)(2.09 kJ/kg°C)(100°C - 0°C) = 11.495 kJ.

For the second phase change from water to steam, the equation would be Q = (0.04 kg)(4.18 kJ/kg°C)(100°C - 100°C) = 0 kJ.

Therefore, the total energy added to accomplish the transformation would be 11.495 kJ.

## 1. What is the process of changing ice to water to steam?

The process of changing ice to water to steam is known as the water cycle. It involves the changing of physical states of water, from solid (ice) to liquid (water) to gas (steam) and back again.

## 2. How does ice turn into water?

Ice turns into water when it absorbs enough energy from its surroundings, causing the molecules to gain enough energy to break the bonds holding them together. This results in the molecules being able to move freely, turning the solid ice into liquid water.

## 3. What happens to water as it turns into steam?

As water turns into steam, it undergoes a process called evaporation. The molecules in the liquid gain enough energy to break free from the surface tension and escape into the air as a gas. This process is known as vaporization.

## 4. What is the boiling point of water?

The boiling point of water is 100 degrees Celsius or 212 degrees Fahrenheit. This is the temperature at which water begins to turn into steam and undergoes a phase change from liquid to gas.

## 5. What is the role of heat in changing ice to water to steam?

Heat is the key factor in changing ice to water to steam. It provides the energy needed for the molecules to break free from their bonds and change physical states. Without heat, the water cycle and the phase changes between ice, water, and steam would not occur.

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