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Q: up - Period 5 4. A green crystal does not conduct electricity dissolves in water and the solution…
A: Ionic. Ionic solid crystal does not conduct electricity in solid phase but can conduct electricity…
Q: What is the Simpliest form of substance
A: What is the Simpliest form of substance
Q: 1. Which soil will usually have the higher porosity, a sandy soil or a clay soil? Why?
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Q: Give TWO (2) purposes of the small hole that some ballpoint pens have in their main body.
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Q: Cite some possible applications of determining the melting point of a substance. Explain briefly
A: In addition to that, melting point is often used to predict the partition behavior of a chemical…
Q: What is the difference between raw and pure products?
A: Raw materials often include insoluble particles requiring a clarification by pass system beforehand,…
Q: Consider this list of substances: H2O, Ni, KI, CH4. Match these substances with the properties…
A: Ionic compounds and metals are good conductors of electricity as the electrons in them are free to…
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Q: If you had the material of ammonium chloride and water mixed together, could that help ice melt…
A: Given: ammonium chloride and water are mixed.
Q: What is the correct chemical waste of Ammonia and Diethylamine A. Down the sink B.…
A: Answer :
Q: .What statements accurately describe kinetic molecular theory? Select two that apply. The…
A: What statements accurately describe kinetic molecular theory? Select two that apply. The…
Q: List 3 possible uses of carbon nanotubes. What is one drawback to the use of nanotubes.
A: This question is related to topic of nanotubes.
Q: Describe what happens on the molecular level when silica is heated and then cooled to make glass.
A: The general formula of silica is SiO2 which melts on heating above 1500oC.
Q: What liquid is usually used and measured when calibrating glassware? a. Water with detergent O b.…
A: Answer What liquid is usually and measured when calibrating…
Q: By the means of gas stoichiometry, how deodorants are created?
A: Stoichiometry is the expectation of how much the item is created in the wake of responding the…
Q: H2O НСНО -> Evaporate 2.
A: Here we have to complete the reaction-
Q: When you test a sample of tap water, the lightbulb of the conductivity apparatus glows bright why?
A: When we test a sample of tap water, the light bulb of the conductivity apparatus glows bright. Hence…
Q: What is a mineral? Every mineral has a crystalline structure. What does this mean?Explain why oil…
A: Given : minerals. To find : definition of mineral and reason for oil and gas are not minerals.…
Q: What is the types of glass. Give detail
A: Glass is a hard substance that is transparent or translucent in nature. It can be made by a fusion…
Q: pearance of purple color ( :12 (b) Cele
A: In titration of phosphoric acid, use either methyl orange to detect first end point around the value…
Q: Minerals that generally form from the evaporation of a water-based solution belong to which chemical…
A: Rocks which formed by evaporation of water-based solution are known as evaporites or evaporites…
Q: Give two similarities between liquid ammonia and water as great solvents
A: According to the question, We need to point out two similarities between liquid ammonia and water…
Q: ___9. The microwaves are sent to the reflecting fan. ___10. The microwaves are reflected in many…
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Q: Explain :(a) List two differences between metallic and ionic crystals.(b) Sodium chloride is hard…
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Q: You may have found that washing the oil out of a pan with water alone is exceedingly difficult. But…
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Q: Which property would give you the best evidence of the difference between sugar and salt? (a) Size…
A: Sugar: Sugar is the name for sweet-tasting compound which are soluble carbohydrates. Among Those…
Q: 5. Two students attempt to etch their initials on a gold plate using hydrochloric acid. 6. A student…
A: By calculating the cell potential we can determine the reaction spontaneity.
Q: Name two compounds used as adsorbent for controlling humidity.
A: Adsorbent is the surface on which the particles are adsorbed on the surface and energy is released.…
Q: Determine which among the metals below have low, medium, high, or very high melting point. Please…
A: Very High Melting Point = Tungsten Very High Melting Point = Zirconium Medium Melting Point =…
Q: A glass is primarily made of the following except O silicon dioxide O calcium oxide carbon dioxide…
A: Glass is a non-crystalline solid. It is transparent in nature. It is used for many different…
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Q: In the table are some of the powders used in the pharmaceutical industry. Describe and give three…
A: Efflorescent powder = Description = Those substance which are solid which undergo spontaneous loss…
Q: why is it that glass fibers of different lengths have different strengths
A: Glass fibre is material consisting of number of fibres of glass
Q: What is the disadvantage of soda-lime glass?
A: Given: To explain the disadvantage of soda-lime glass
Q: 14 The table shows some physical properties of three substances X, Y and Z. Substance| Melting point…
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Q: What does it mean when a liquid is flammable?
A: Matter is the substance that occupy space and have mass. States of matter:- Solid Liquid Gas…
Q: explain how ammonium nitrate is an effective material for ice packs.
A: Answer - Ammonium nitrate - Ammonium nitrate is a crystal-like white solid which is made in large…
Q: 24. A solid is insoluble in water, does not conduct electricity, and does not melt below 1000°C.…
A: Inorganic chemistry:
Q: Cadmium selenide (CdSe) is used as a semiconductor quantum dot and is an example of nanotechnology…
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Which substances have the same color, taste,and flammability?
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- What makes diamond one of the strongest materials known by scientists?What is the property of a material that makes it transparent? Why does mineral such as emerald show coloration?Which method would you use to determine water content in packaging material, pharmaceuticals and cosmetics? Mention few advantages of this method.
- You may have found that washing the oil out of a pan with water alone is exceedingly difficult. But a small amount of soap makes it fairly easy. What is it about the soap that allows it to remove oils from the glassware?104. Highly resistant borosilicate is what type of pharmaceutical glass for containers? a. I B. IV C. III D. II 105. If a certain hydrogen peroxide solution is 20-volume hydrogen peroxide, it contains: I. 3% Hydrogen Peroxide II. 6% Hydrogen Peroxide III. 10 mL Oxygen IV. 20 mL Oxygen A. I, IV B. II, IV C.I, III D. IV E. II, IIIRefer to Figure 11.11. (a) How did the concentration of dissolved CO2 in the beverage change when the bottle was opened? (b) What caused this change? (c) Is the beverage unsaturated, saturated, or supersaturated with CO2?
- Water has a high specific heat because (a) hydrogen bonds must be broken to raise its temperature (b) hydrogen bonds must be formed to raise its temperature (c) it is a poor insulator (d) it has low density considering the size of the molecule (e) it can ionizeDilution was “the solution to pollution” for much of human history. What is the meaning of this expression?Directions Through the given situations below, answer the following questions 1 A mixture of monosodium glutamate, white sugar, salt and benzoic acid is to be melted by a group of Grade 7 students to determine the behavior of the mother during melting Predict how the mixture will look like as it is being heated. Explain your answer SUBSTANCE Sali White sugar Monosodium glutamate Benzoic acid MELTING POINT 801 C 186 C 232 C 122 C 2. Theo wants to observe what will happen to substance X (melting point is at 78 C) after heating it on an evaporating dish. After heating for a few minutes, substance X starts
- In the table are some of the powders used in the pharmaceutical industry. Describe and give three examples for each. Powder Description Examples Efflorescent powder Deliquescent powder Hygroscopic powderExplain how drying, salting, fermentation, canning, and freezing preserve food.You are presented with a Glass #1 of white liquid, through which little or no light passes. Upon standing, it does not change. Glass # 2 contains a brown liquid, through which little or no light passes. Upon standing, a brown solid settles to the bottom of a clear liquid. Based on what we have learned, which best classifies the contents of the two glasses?
