Water can be sprayed easily when soap is added to it, Why?

Q: How is the boiling point of water affected when some salt is added to it?

A: When salt is added to water, there is dissociation of sodium chloride into sodium and chlorine ions.…

Q: Why is it necessary to use a small diameter, thin-walled capillary for holding the sample in the…

A: Solution:

Q: When mixing an acid with water, Heat the water and acid to ensure proper mixing. O Always pour equal…

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Q: Give evidence that the density of water does not follow that of most substances, when heated.

A: Of course, density of most matter in the earth(not to say universe) depend on temperature. Water's…

Q: When wax is coated on clothes , they become water proof. Why?

A: When there is no wax, adhesive force between cloth and water molecules is stronger than the cohesive…

Q: Many dry cereals are fortified with iron, which is added to the cereal in the form of small iron…

A: The iron particles are separated from the cereal with the help of magnets. we need to grind and…

Q: two blocks of ice when placed together, combine to form a single piece. explain how this happens?

A: The melting point of ice:

Q: A ring at a pawn shop is labeled “gold”. The ring has a mass of 4.4 g and a volume of 0.55 cm³. Is…

A: Given : Mass of ring = 4.4 g Volume of ring = 0.55 cm3 Density of pure Gold = 19.3 g/ cm³

Q: Why is half frozen fruit punch always sweeter than completely melted fruit punch?

A: The sweetness depends on the concentration of the sugar.One of the main constituents of fruit is…

Q: what do you observe when you rub the ballpen in your skin or hair?

A: Ballpen rubbed on skin or hair

Q: Would regelation occur if ice crystals did not have an open structure? Explain.

A: The structure of ice is similar to that of water molecules. There exist hydrogen bonds in ice…

Q: rive the equation H= U + PV

A: Enthalpy, H  : It is a property of a thermodynamic system, which is defined as the sum of internal…

Q: Why does water vapor in the air condense when the air is chilled?

A: In the condensation process, a substance changes its phase from gas to liquid.   The kinetic energy…

Q: Does a liquid release energy or absorb energy when it changes into a solid?

A: A process by which a liquid changes to solid is called freezing or solidification.

Q: Two safety pins, identical except that one is latched and one is unlatched, are placed in identical…

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Q: A tank initially holds 100 gal of a brine solution containing 1 Ib of salt. At t-0 another brine…

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Q: A liquid which is around vaporization state is called: o Saturated liquid o Compressed liquid o…

A: In this question we have to answer what is the liquid called which is around its vaporization state.…

Q: What is the difference between a bleach safe for white clothes and those that are considered safe…

A: Given : Asked question : What is the difference between a bleach safe for white clothes and those…

Q: How does the freezing point of a liquid compare with its melting point?

A: the melting point is the temperature at whcich a substance changes from the solid phase to liquid…

Q: Diffusion always drives molecules from higher concentration to lower concentration. Oa. True O b.…

A: The kinetic energy of the molecules results in random motion, causing diffusion. In this random…

Q: Red gold is a gold-copper alloy used to make jewelry. A piece of jewelry made of red gold weighs…

A:

Q: Tents are coated with thin layer of aluminium hydroxide. Why?

A: Tents are coated with a thin layer of aluminium hydroxide because aluminium hydroxide is insoluble…

Q: Oil spreads over surface of water whereas water doesnot spread over the surface of oil. Explain.

A: The surface tension of the water is higher than the oil. Therefore, when oil is poured over water,…

Q: A technique that uses a moving liquid phase and a stationary solid phase to separate mixtures is…

A: The technique used to separate on the basis of polarity difference is known as chromatography.

Q: Who has more need for drink in a dry desert climate, a child or an adult?

A: The rate at which dissipates heat from an object is directly proportional to the surface area.…

Q: These are the characteristics of _____ solids.

A: There can be metallic solids, Van der Waals solids, Ionic solids, and Covalent solids.

Q: Why hot water bottles are used for fomentation?

A: Hot water has high specific heat capacity. Due to this, the water remains hot for a longer duration.

Q: If you add oil to the water,what will happen?Will it create a single homogeneous phase or will it…

A: When oil is add to a water, oil doesn't mixed with water.

Q: Why is it not possible to separate two pieces of paper joined by glue or gum?

A: The adhesive force between glue and paper molecules is much greater than the adhesive force between…

Q: Supposed you had a mixture of iron pellets, pebbles, and small wood spheres, all of which were about…

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Q: Substances that don’t conduct heat are known as what?

A: The value of coefficient of thermal conductivity (K) of a material is equal to the rate of flow of…

Q: A two-component mixture is made up of components A and B with nA=0.11ng. If a small change in…

A: In the given question, We have to calculate the value of change μB.

Q: true or false ? is Oxygen is an example of matter .

A: Matter is made from atoms. Every substance has a unique number of protons, neutrons, and electrons.…

Q: Compare to air sound heard is more in carbon dioxide , Why?

A: The intensity of the sound wave produced in a medium is directly proportional to the density of the…

Q: Why are the temperature and pressure dependent properties in the saturated mixture region?

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Q: If no molecules in a body could escape, would the body have any odor?

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Q: What is mole?

A: Mole is the unit of amount of substance. It consists of Avogadro number of particles. Avogadro…

Q: Molecules in air in the atmsophere are attracted by the gravitational force of the earth. Expllain…

A: Apple’s mass is very large as compared to the air molecules. When an apple falls from a tree, only…

Q: What is a mixture? Give three examples?

A: The mixtures are formed by mixing the two or more substances with each other without combining…

Q: What is the effect of increase in pressure on the boiling point of a liquid?

A: When the pressure applied to the liquid surface is increased, the energy needed for the liquid…

Q: Is iced water a pure substance? Why?

A:

Q: When the bottle of carbonated soda is submerged in hot water then let cool to room temperature, why…

A: When carbonated soda is submerged in hot water  then it will start to lose carbonation faster than…

Q: Give a reason why soda drinks should be in plastic bottles rather than in aluminum cans?

A: A typical soda drink may contain acids like citric acid which can react with metallic containers and…

Q: What determines the pressure at a given point in a liquid system

A: Pressure inside a liquid depends on: 1) Acceleration due to gravity 2) Depth of point 3) density of…