Take some water with a straw and put a few drops on plastic sheet. Put a small amount of one of the solids (salt, pepper, sugar, talcum powder) on one of the drops. Does the shape change? Try this again with the other solids.

Q: 3. Why do oils leave a translucent spot on paper even after drying, while ethanol and water do not.

A: It's translucent. It is due to filling of the gaps between the particles of the paper by oil…

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A: The objective of the question is to identify the prerequisite skills or prior knowledge that a 5th…

Q: Air is composed of many gases, while water is composed of a pure substance. Which best compares air…

A:

Q: 13. Which of the following scenarios is an example of cohesion? a. water molecules stick to the…

A: 13) Cohesion is the attractive force between molecules of the same material. So the correct option…

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A: Answer Options A, B and C are the three experimental errors that could have most likely occurred.…

Q: What would be a Prerequisite Skill or Prior Knowledge that a 5th grade science class should know…

A: The objective of the question is to identify the prerequisite skills or prior knowledge that a 5th…

Q: Correlate solidification with crystallization(Explanation needed).

A: Solidification is the process of changing the state of a system from either gaseous or liquid state…

Q: 1. ReShayla was making pancakes and decided that she wanted hot syrup on her pancakes. As she poured…

A: Viscosity of a substance decreases with increasing temperature.

Q: 1)  When comparing plain water to salt water, which will have higher surface tension?  Cite evidence…

A: It is defined as the force per unit length acting perpendicular to the surface of the liquid. This…

Q: Talk about the reason for surfactants to reduce the surface tension.

A: The compounds which which lowers the interfacial tension or we can say that lowers the surface…

Q: 6. The head part of a soap molecule works because it's polar; rinsing off with water it's nonpolar;…

A: The compounds which contain a long hydrophobic chain of carbon atoms and a hydrophilic head of the…

Q: 4. The Marangoni effect is the tendency of a material to move from a region of low surface tension…

A: Surfactant change the surface tension to propel your boat forward . This is the soap boat experiment…

Q: Recently a team from Clarkson University discovered a porous solid called NU-1000, constructed from…

A: Given data:Density of NU-1000 is 0.486 g/cm3Surface area of NU = 2255 m2/gMass of material placed in…

Q: So here are a series of experiments:1. A balloon was held against a wall. When it was released, the…

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Q: models are functional tools that scientists use to explain complex behaviors. What is a benefit of…

A: The spacefill model is used in chemistry to represent the 3-D structure of molecules using spheres…

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Q: 1. Water is necessary for life on Earth. Water is made up of hydrogen and oxygen atoms (H2O);…

A: In our planet, the key source of oxygen in the wide atmosphere.

Q: Why is some water hard?

A:

Q: Using the formulas in this lab module for various shapes, calculate the volume of a solid ball made…

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Q: What is hard water? What are the main problems combining soap and hard water?

A: *Hard water is nothing but the amount of dissolved salts of calcium and magnesium which are present…

Q: Which method would you use to determine water content in packaging material, pharmaceuticals and…

A: Karl Fischer method

Q: 1. Which of the following is not a step in preparing a water sample container? a. All sample…

A: Option a is the correct answer. Steps in preparing a water sample container: Decide on the number of…

Q: Explain why butter is solid in room temperature, while vegetable oil is liquid?

A: Fatty  acids  are the building blocks of  fat in  our bodies and in the food .

Q: Take some water with a straw and put a few drops on plastic sheet. move one of the drops close to…

A: The objective of this question is to show the interaction of water droplets on a film plate and…