WHY DOES SALT MAKE ICE COLDER? LEARN THIS AMAZING PHENOMINA WITH THE HELP OF A SIMPLE EXPERIMENT.

LEARN WITH SHEHARYAR

15 Feb 202302:49

Summary

TLDRIn this educational video, the host explores whether adding salt to ice lowers its temperature. Through a simple experiment, two glasses of ice are compared: one with salt and one without. Initially, both glasses register 0.1°C. After adding salt and stirring, the temperature of the salted ice drops significantly to -12°C. The science behind this phenomenon is explained: salt disrupts the freezing process by interfering with water's ability to form a crystalline structure, thus requiring a colder temperature for freezing. The video concludes with a reminder to like and subscribe for more science experiments.

Takeaways

🧪 The video explores whether adding salt to ice lowers its temperature through a simple experiment.
🥶 Initially, both glasses of ice have the same temperature of 0.1 degrees Celsius.
🧂 Salt is added to one glass of ice to observe its effect on the freezing point.
🔬 The science behind the experiment is that salt disrupts the freezing process of water by interfering with the formation of a crystalline structure.
⏱️ After five minutes, the temperature of the ice with salt has significantly decreased, while the control remains at 0.1 degrees Celsius.
❄️ The temperature of the ice with salt drops to minus 12 degrees Celsius, demonstrating the effect of salt on the freezing point.
🌡️ The addition of salt to ice results in a lower temperature at which the ice freezes, due to the hindrance of water's ability to organize into a solid state.
🧶 Dissolving salt in water leads to the formation of Na+ and Cl- ions, which disrupt the water's freezing process.
🧊 The presence of salt ions in water increases the difficulty for water molecules to freeze, thus lowering the freezing temperature.
🧂 Other types of salts can dissolve into more particles and have an even greater impact on lowering the freezing point of water.
📺 The video concludes by encouraging viewers to like and subscribe for more educational content.

Q & A

What is the main focus of the video?
-The main focus of the video is to determine whether adding salt to ice lowers its temperature.
How does the experiment begin?
-The experiment begins with two identical glasses containing ice cubes, ensuring both have the same amount of ice.
What is the initial temperature of the glasses of ice?
-The initial temperature of both glasses of ice is 0.1 degrees Celsius.
What is added to one of the glasses to conduct the experiment?
-Salt is added to one of the glasses to observe its effect on the temperature of the ice.
What is the scientific explanation behind the addition of salt to ice?
-When salt is added to ice, it lowers the freezing point of water, making it more difficult for water to freeze and causing the ice to remain in a liquid state at a lower temperature.
How long after adding salt is the temperature of the ice checked?
-The temperature of the ice with salt is checked after more than five minutes.
What is the observed change in temperature after adding salt?
-After adding salt, the temperature of the ice decreases drastically to minus 12 degrees Celsius.
How does salt affect the freezing process of water?
-When salt dissolves in water, it dissociates into ions that interfere with the formation of a crystalline structure required for freezing, thus lowering the temperature needed for water to freeze.
What happens when salt dissolves in water?
-When salt dissolves in water, it dissociates into its ionic form, such as Na+ and Cl- ions, which disrupt the organization of water molecules into a crystalline structure.
What is the role of salt ions in the freezing process?
-Salt ions get in between water molecules, making it more difficult for them to organize into a crystalline structure, thus lowering the freezing point.
Can other types of salts have a more significant effect on the freezing point?
-Yes, some other salts can dissolve into more particles than table salt, which can lower the freezing point even more.
What is the conclusion of the experiment?
-The conclusion of the experiment is that adding salt to ice does indeed lower its temperature, as evidenced by the drastic decrease in temperature in the glass with salt.

Outlines

00:00

🧊 Experiment: Salt's Effect on Ice Temperature

This video explores whether adding salt to ice lowers its temperature. The experiment involves comparing two glasses of ice, one with salt and one without. Initially, both glasses have ice at 0.1 degrees Celsius. Salt is added to one glass and stirred. The science behind the experiment is explained: salt lowers the freezing point of water, making it harder for water to freeze. After five minutes, the temperature of the glass without salt remains at 0.1 degrees Celsius, while the salted ice's temperature drops significantly to minus 12 degrees Celsius. This occurs because salt ions interfere with the water molecules' ability to form a crystalline structure necessary for freezing, thus requiring a colder temperature to freeze. The video concludes with a reminder to like and subscribe for more science experiments.

Mindmap

Keywords

💡Salt

Salt, in this context, refers to table salt (sodium chloride), which is commonly used as a seasoning but also has scientific applications. In the video, salt is used in an experiment to demonstrate its effect on the freezing point of water. When added to ice, salt disrupts the crystalline structure of water, making it more difficult for the water to freeze, thus lowering the freezing point. This is a key concept in understanding why adding salt to ice lowers its temperature.

💡Freezing Point

The freezing point is the temperature at which a liquid turns into a solid. For pure water, the freezing point is 0 degrees Celsius (32 degrees Fahrenheit). The video explains that adding salt to water lowers this point, which is a crucial concept in the experiment. The freezing point is lowered because the salt ions interfere with the water molecules' ability to form a solid structure.

💡Dissociation

Dissociation is the process by which a compound breaks down into its constituent ions when dissolved in water. In the video, it is mentioned that when salt dissolves in water, it dissociates into sodium (Na+) and chloride (Cl-) ions. This process is key to understanding why salt lowers the freezing point of water, as the ions disrupt the water's ability to freeze.

💡Ionic Form

The ionic form refers to the state of a compound when it has been dissociated into its constituent ions. In the context of the video, when salt dissolves in water, it forms sodium and chloride ions, which are in their ionic form. This ionic form is significant because it is the state in which the salt affects the freezing point of water.

💡Crystalline Structure

A crystalline structure refers to the ordered, repeating arrangement of atoms, ions, or molecules in a solid. In the video, it is explained that water forms a crystalline structure when it freezes. The addition of salt disrupts this structure, making it more difficult for water to freeze, which is why the temperature of the ice decreases when salt is added.

💡Experiment

An experiment is a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact. The video describes an experiment where two glasses of ice are compared, one with added salt and one without, to observe the effect of salt on the temperature of ice. The experiment is central to the video's theme of demonstrating the scientific principle behind salt's effect on ice.

💡Temperature

Temperature is a measure of the average kinetic energy of the particles in a substance. In the video, the temperature of the ice is measured before and after the addition of salt. The decrease in temperature after adding salt is a direct result of the salt's effect on the freezing point of water, which is a key observation in the experiment.

💡Science

Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. The video is about a scientific experiment that illustrates a scientific principle. The term 'science' encompasses the method and the knowledge gained from the experiment about the interaction between salt and ice.

💡Molecules

Molecules are groups of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. In the video, the interaction between salt ions and water molecules is discussed. The salt ions get in between the water molecules, preventing them from forming a crystalline structure necessary for freezing.

💡Conductive

Although not explicitly mentioned in the script, the term 'conductive' is implied when discussing the ions' ability to disrupt the water's crystalline structure. In a broader scientific context, conductive refers to the ability of a substance to allow the flow of electric current. In the context of the video, the ions from the salt act as a 'conduction' of sorts, facilitating the disruption of the water's natural freezing process.

💡Observation

Observation is the act of noticing or perceiving something. In the video, the observation of the temperature change in the ice with and without salt is crucial. The video demonstrates the scientific method by making an observation (the temperature decrease in the salted ice) and then explaining the underlying principle (the effect of salt on the freezing point of water).

Highlights

Experiment to determine if adding salt to ice lowers its temperature.

Two identical glasses with ice cubes are used, one with added salt and one without.

Initial temperature of both glasses is measured at 0.1 degrees Celsius.

Salt is added to one glass and stirred to observe its effect on ice temperature.

Science behind the experiment: Salt lowers the freezing point of water.

Freezing point of pure water is 0 degrees Celsius or 32 degrees Fahrenheit.

Salt makes it harder for water to freeze by interfering with the freezing process.

Ice with salt stays in liquid state at lower temperatures.

After five minutes, temperature of the glass without salt remains at 0.1 degrees Celsius.

Temperature of the ice with salt drastically decreases to minus 12 degrees Celsius.

Salt dissolves into ions that disrupt the water molecules' ability to form a crystalline structure.

The presence of salt ions lowers the temperature required to freeze water.

Different salts can dissolve into various particles and affect freezing points differently.

Table salt dissolves into two particles, affecting the freezing point.

Experiment concludes that adding salt to ice does indeed lower its temperature.

Encouragement for viewers to like, subscribe, and watch more science experiments.