How does a physical change differ from chemical change

Q: What is the difference between ohmic and non-ohmic conductors

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Q: what will happen when a dishwashing liquid mixed in water

A: When dishwashing liquid is added to water, the detergent molecules break down the cohesive…

Q: Why is soap solution a better cleansing agent than ordinary water?

A: Water although a good general solvent, has a high surface tension. This makes the water molecules to…

Q: Physical or Chemical change? O neither O both O physical O chemical

A: Introduction: Physical change: Physical change is the change in size, shape, or state of the…

Q: Which is an example of a mixture? O A. Water O B. Salt O C. Milk O D. Aluminum

A: Mixtures are formed by composition of different substances, such that they possesses the identical…

Q: Measure the temperature of boiling water and the temperature of a boiling solution of salt and…

A: When we measure boiling point of water and salt water, salt water will have more boiling point than…

Q: nce that can eat away at other sub

A: Corrosion is called the slow swallowing up of metals by the action of sunlight, moisture, or a…

Q: The graph below shows how the temperature of a sample of water changes as energy is added to the…

A: Gas form at its boiling point

Q: What is electronegativity difference between oxygen and carbon

A: Electronegativity is the property of an atom by which it tends to attract the shared pair of…

Q: Categorize each of the following as a physical or chemical change. Explain your reasoning: a)…

A: The problem is based on physical and chemical change. Phycisal changes are that changes where the…

Q: Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the…

A: Required : NaCN  salt is acidic or base.

Q: Dangers of tailgating

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Q: how do you tell the difference between polar and non polar molecules. There is no chemistry option

A: A polar molecule is that molecule which consists of two parts with opposite charges on them. In…

Q: A balloon is filled with a 15% salt/ 85% water solution. Explain what will happen to the balloon if…

A: For this we need to learn about hypotonic solution and it's affect on the inner concentration.

Q: Differentiate between boiling point and normal boiling point.

A: Tthe conversion of solid state into liquid state occurs at a particular point and the tempertaure at…

Q: Which of the following is a pure substance? O 1. a cube of sugar 2. a block of wood 3. a strap of…

A: Pure substances are substances that are made up of only one kind of particle and have a fixed or…

Q: Write at least 5 chemical changes that you observe in your household and community.

A: Whenever one chemical substance is transformed into one or more different substances, the change is…

Q: What affect the equilibrium of the concentration

A: The amount of solute that has been dissolved in a given amount of solvent is called Concentration of…

Q: Distinguish the same chemical characteristics but have different physical properties?

A: Required : Which have the same chemical characteristics but difference physical properties.

Q: 2. Substances have a definite and unchanging chemical composition. Examples of substances are salt,…

A: Option C is correct  Their composition is balance wherever you find them

Q: Outline the procedures used to calculate the motion of molecules in fluids and atoms in molecules.

A: Motion of molecules in fluid can be determined by stokes law. which state as: the viscus drag force…

Q: Make your reflection of what you've learned about this topic " The Nano World" .

A: The fields of nanoscience and nanotechnology are known for their contributions to the economy of all…

Q: What is the formula for the common household compound known as washing so

A: Washing soda

Q: Differentiate between endothermic reactions and exothermic reactions?

A: Endothermic Reactions: A reaction that the system absorbs energy from its surrounding in the form of…

Q: Balanced inward force on a material or structure*

A: Balanced inward force on a material or structure.

Q: Sketch characteristics curve of ohmic device

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Q: Determine the percentage by mass of each element in the following compounds. place.) (a) ammonia,…

A: (a) In the compound NH3 There is 1 N atom and 3 H atom Mass of N = 14 u Mass of H = 1 u Mass of the…

Q: Two neutral molecules

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Q: Alcohol and water are miscible  True  False

A: Alcohol and water both are polar in nature and due to have same polarity they make H -bond  with…

Q: Write name of any four chemical which are used in domestic purpose

A: 1. Sulfuric acid- H2SO4- it is used in lead storage batteries. 2. Vinegar- CH3COOH- Acetic Acid- It…

Q: 50 grams of KCl are dissolved in 200 grams of water at room temperature. Is the resulting solution…

A: We need to tell whether the resulting solution is unsaturated, saturated or supersaturated.

Q: Data and Observations Change or Reaction Burning wood or paper Chemical or physical change? How do…

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Q: Describe the arrangement of atoms in solids, liquids, and gases.

A: Arrangement of atoms in solids : Atoms in solid are tightly bounded, generally in uniform or…

Q: Is a broken glass/metal stake a physical or chemical change? Explain.

A: A broken glass/metal  is a physical change as there is not any chemical change in the process. as a…

Q: why does the solubility decrease with decreasing tempreture

A: Solubility of solids dissolved in water depends on Kinetic energy of water molecules , as the…

Q: Which information in a product label do you consider important and why?

A: Which information in a product label do you consider important and why?

Q: Differentiate ohmic and non ohmic materials

A: The material that obeys Ohm’s law is said to be an Ohmic material. While the material that does not…

Q: What is a physical change

A: Physical change can be defined as the change in the physical form of the substance without any…

Q: Explain briefly ohmicand non-ohmicstatements. Give two examples for each material type.

A: Ohmic Resistances : Those resistances which follows the Ohm's law i.e., the resistance of those…

Q: Please define about eutectic mixture with Example ?

A: A eutectic mixture is defined as a mixture of two or more than two components that usually do not…

Q: Isra is analyzing the properties of several samples of elements to find out which sample is a…

A: