What would be a Prerequisite Skill or Prior Knowledge that a 5th grade science class should know on a lesson about mixing substances before using the below standard? Standard Conduct an investigation to determine whether the mixing of two or more  substances results in new substances.

Q: A chef in Denver (the mile high city) and a chef in Tampa (sea level city) make the same recipe but…

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Q: is a homogeneous mixture and not a compound. Explain 2. How could you tell when the milk mixture had…

A: Milk is a homogeneous colloid. Colloids are mixtures that consist of tiny, insoluble droplets…

Q: Are Particles Visible? Can it be Filtered? Do Partices Settle? See Tyndall Effect? Msture Example…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Which of the following given statements is false? 1. The electrical conductivity of water is…

A: The question is of true - false. Here out of four options one option is false. Question 1st is based…

Q: The aqueous form of elements or compounds need to have _____:  a. been mixed with a solvent b.…

A: A solution is made up of two units- solute solvent. The quantity of a substance that is present in…

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

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Q: Select all of the true statements about melting points. a. The melting point range of a pure…

A: The melting point of a substance is the temperature at which it changes from a solid to a liquid…

Q: what are the current distillation technologies used for ethanol and water in the industry?

A: Microbubble Distillation for Ethanol-Water Separation Distillation technique iso ne of the oldest…

Q: Iron will be dicarded Naphthalene will be dicarded in the sink with running water. NaCl will be…

A: Process of discarding certain wastes

Q: Determine the midpoint of the starting and completed melting temperatures. Use those temperatures to…

A: Midpoint of the melting temperature range is calculated by finding out the mean temperature of the…

Q: nces. ure.

A: 7-a   true  7-b.  True  7-c.  True  8/a.  Compound 8/b. Elements  8/c.  Soap is not a compound, it…

Q: Which branch of chemistry studies the composition of substances? The environmental impact of…

A: Chemistry involves the systematic study of various branches related to molecules wherein every…

Q: Answer all questions 01. a) In the two bioplastic films, determine which one has the highest tensile…

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Q: How does the fractionating column make distillation more precise? A. The added distance gives more…

A: "The correct answer and explaination are given in the following steps"

Q: Solubility of Liquids in Liquids Pour 5 mL of rubbing alcohol into an equal volume of water and…

A: Given liquids: Water: H2O Alcohol: R-OH In this activity,  1. 5 mL of alcohol is added to 5 mL…

Q: mixtures =) Complete: A mixture is composed of substances which are not chemically combined.…

A: Let us define the mixture and then fill the blanks.

Q: An analysis of 0.7 kg dry soil sample (having a volume of 500 mL) shows that sample contains 35 mg…

A: The molecular weight of naphthalene (C10H8)= (120+8)=128 g. 35 mg= 0.035 g naphthalene is present in…

Q: Research on fireworks. Find out the chemicals responsible for the display of beautiful colors.

A: To Explain: Chemicals responsible for the display of beautiful colours in fireworks.

Q: Think aboutthe definition of boiling point when answering this question.A certain liquid boils at…

A: The process of conversion of liquid molecules into vapours is called evaporation . The pressure…

Q: Many of the itemsyou purchaseare mixtures of pure compounds . Select of three of these commercial…

A: Commercial products that are the mixtures of purecompound are as follows:

Q: An impure sample contains 0.74 g of impurities and 4.55 g of benzoic acid. The sample is dissolved…

A: Mass of impurity         = 0.74g Mass of benzoic acid = 4.55g Total mass of sample = 0.74+4.55 =…

Q: 1. Give two reasons why one substance might have a greater density than another substance from a…

A: 1. The size, mass, and arrangement of molecules affect the density of a substance. Consider sample A…

Q: An unknown liquid is added to a beaker of water. After a few minutes you discover that unknown…

A: Like dissolves like. It means polar solvents are miscible in polar solvents and non-polar solvents…

Q: Filtration of samples A, B, and C show no residue left. After letting them dry in different beakers,…

A: Filtration is a technique to separate insoluble part from the soluble part in a solution.  No…

Q: A 310.0-g sample of river water taken near an industrial plant contains 50. mg of chromium. What is…

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Q: Questions 1. Give two qualitative observations for each sample upon closer examination of the…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: explain how decantation, filtration, and evaporation are done as a separation process

A: Decantation:  It is the process by which we can separate mixtures of two immiscible liquids.…

Q: substance has a solubility of 12.5 g per 100 mL of solvent at 100 degrees celsius and 2.45 g per 100…

A: Given : solubility of substance at 100 °C = 12.5 g/100 ml  Solubility of substance at 10°C = 2.45…

Q: What type of distillation set up is in the picture? A Simple distillation Steam distillation

A: Given distillation set up,

Q: How are gases different from solids and liquids? O A. Gases can only be made up of atoms O B. Gases…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: #13-15 Choose the letter of the correct answer.

A: multiple Choice Question.,

Q: the kinetic energy of particles

A: The kinetic energy of the Gas is greater than the kinetics of liquid, greater is the kinetic energy…

Q: Sample 1 Food coloring dye spreads slowly in a sample of water Sample 2 Food coloring dye spreads…

A: Rate of diffusion of dye in water is directly proportional to temperature. Higher the temperature,…

Q: Place a pinch of Sodium chloride on a teaspoon. Heat and note the time it takes to melt it. If after…

A: Please find the attachment.

Q: 7. A student combines pure NaCl (sodium chloride) with pure DI water. The resulting is an example…

A: Given process,            Mixing of pure NaCl with pure DI water. a. homogeneous mixture          b.…

Q: Place a pinch of Sodium chloride on a teaspoon. Heat and note the time it takes to melt it. If after…

A: Pure compound has specific melting and boiling point. For example Boiling point of pure water is 100…

Q: placed in separate containers labeled Sample A and Sample B. Both containers were left open until…

A: Solution: We know homogeneous solution is a mixture of two or more substances. As homogeneous…

Q: Which of the following is a pure substance that can be broken down into simpler substances by…

A: Solution: It is a homogeneous mixture of two or more components that are uniformly distributed…

Q: What is diffusibility? Why is it important for us to learn about this when it comes to field of life…

A: Diffusion is a spontaneous process.It ocuur in liquid and gas.Diffusion has an importance in human…