What is needed for a liquid to freeze?

Q: Explain why dispersion forces form.

A: Atoms are held together in a molecule because of some attractive and repulsive forces. These forces…

Q: How much EKG is required to melt 12.32 g of ice?

A: H2O (s) ---> H2O (l)  ∆H = 6.02 KJ

Q: List the Properties of Liquids?

A: Matters are the substances that are formed by combining very small particles. Matters are not able…

Q: Why is water commonly used in cooling systems?

A: Cooling system absorb heat from hot objects . It involve transfer of thermal energy from hot object…

Q: What is the name of the phase change that occurs when ice left at roomtemperature changes to liquid…

A: Ice is the solid form of H2O. Water is the liquid form of H2O.

Q: What is the normal freezing point, melting point, and boiling point of the substance

A: Matter generally exists in 3 different forms, namely solid, liquid and gas. The three states…

Q: Why water expand in the form of ice?

A: As we know water is generally present in the liquid form. But it also exist in steam form at higher…

Q: Why is water a liquid?

A: Three different states of matter are solid, liquid and gas. The major difference between solid,…

Q: In the picture above, solid iodine is undergoing as it is heated and the iodine vapor is undergoing…

A: What is sublimation?A solid changing to a gas without passing through a liquid phase. Solidification…

Q: What is the relationship between elevation and boiling point of a liquid ?

A: Boiling point of a liquid is the temperature at which the liquid start boiling and at this…

Q: What volume of water must freeze to form 99.0 mL of ice.

A: Given, volume of ice = 99 L

Q: How do the properties of water differ from those of most other substances?

A: Water exists in solid (s), liquid (l) as well as gaseous (g) state. It has many unusual properties…

Q: How much energy is released when 2.55kg of diethyl ether freezes?

A: We have to find the amount of energy released when 2.55kg of diethyl ether freezes.

Q: What is the general relationship between the vapor pressure of a liquid and its temperature?

A: Vapor pressure of a liquid is referred to as the pressure exerted by the molecules of a liquid that…

Q: What do Molecular solids consist of?

A: Molecular solids consist of molecules. For example : Ice is a molecular solid. Exception : In case…

Q: What is the vapor pressure of liquid water at 100 oC?

A: At 100 oC , the vapor pressure of water is 1 atm (atmosphere). The various ways 1atm is expressed in…

Q: Assuming that no heat is lost to the surroundings, what is the temperature of the entire water…

A: Given thatMass of ice = 24.0 gInitial temperature of ice = 0.00oCMass of water = 600.0 g Initial…

Q: How is vapor pressure related to temperature?

A: The definition of vapor pressure is – The pressure is generated because of vapor formation by the…

Q: Why is liquid water more dense than solid water?

A: The reason for, liquid water is more denser then solid water has to be explained.

Q: What are the key properties of liquids (in contrast to gases andsolids)?

A: Intermolecular forces refer to the type of interactions which are present in between atoms or…

Q: What is vapor pressure lowering?

A: The addition of a nonvolatile solute will leads to the lowering of vapor pressure. The reason is…

Q: Using the image below, what phase change would occur moving from region C to region A? Moving from…

A:

Q: What happens to the temperature while there is still ice in the water? Why?

A:

Q: What changes water from a gas to a liquid phase

A: Conversation of gas to a liquid is called condensation. In gaseous phase, the molecules are far…

Q: What point where ethanol begins to melt?

A: Melting point of ethanol is -114.1 °C .  The temperature at which any solid begins to melt is known…

Q: Why does water resist changes in temperature?

A: Properties of water: It is known that water is polar in nature because there is a partial positive…

Q: How many joules are required to melt 100 grams of water?

A:

Q: What are the main properties of solids (in contrast to liquids andgases)?

A: Properties of Solids: • Solids have high densities in comparison to gases. • Solids have a definite…

Q: What phase occurs when a scoop of ice cream begins to drip in the hot sun?

A: Matter is the substance that occupied space and has mass. Solid, liquid and gas are three main…

Q: In North America, Lake Huron is covered with ice from December to April; In May, the ice thaws and…

A: The question is based on the concept of chemical bonding. we have to explain why ice floats on…

Q: 5. Is the melting temperature of a substance different from its freezing temperature? Define the…

A: The melting point of a substance is same as that of its freezing point. At this particular…

Q: Snow forms in the clouds when water vapor freezes without ever passing through the liquid phase.…

A: Solid, Liquid and Gases are the three states of matter which can undergo the transition from one…

Q: Why is solid carbon dioxide called dry ice? How does it differ from solid water in behavior?

A: regular ice that is solid water is made by simply freezing water at freezing point temperatures.…

Q: How do chemical bonds differ from intermolecular forces of attraction?

A: Chemical bonds and intermolecular forces are different concepts. The chemical bonds and…

Q: what happens as a solid melts into the liquid state?

A: The process of solid becoming a liquid is called Melting. The temperature at which melting occurs is…

Q: Why is everything stored on ice

A: We have to answer why is everything stored in ice. Here we give the reason.

Q: How much heat is needed to melt 4.0 g of ice?

A: Asumming the ice is at 0°CThe latent heat of fusion if ice = 334 J/gMass of ice = 4g

Q: Which phase change is correctly labelled? Subliming - exothermic O Vapourizing - exothermic O…

A: Exothermic process means energy is release while in endothermic we have to supple energy.

Q: Describe an experiment to show how pressure in liquid varies

A:

Q: how many joules of energy are absorbed when 36.2 grams of water is evaporated

A: The phase change energy formula is, q=n∆Hvap where, q = energy n = moles ∆Hvap = enthalpy of…

Q: Differentiate between Vaporization and Vapor Pressure?

A: Given: Difference between  Vaporization and Vapor Pressure.     Explanation: Vaporization is defined…

Q: What phase occurs when molten aluminum poured into a mold cools to form a solid object?

A: Mixing is relatively easy in the liquid state but slow and difficult in the solid-state. By melting…

Q: Are the melting temperature and freezing temperature the same for a pure substance? Why is that?

A: Melting point is the temperature at which solid substance start to convert into liquid. Example:…

Q: Why does oil float on water?

A: The reason for why oil was float on water has to be given.

Q: 5. If a liquid reaches the vapor pressure, what happens in the liquid?

A: The objective of the question is to explain and reason what happens when liquid molecules reach the…

Q: How much energy is released when 65.8g of water freezes

A: First convert the given grams to moles.