7. Ryan wants to compare the chemical properties of two substances. In doing it, he preparedtwo flasks containing the substances and labeled them Liquid A and Liquid B. He monitorethe boiling points of the liquids and found that the boiling points were 100°C for substanceA and 110 C - 112°C for liquid B. How would you classify the two liquids?A. Liquid A is pure substance while Liquid B is a mixture.B. Liquids A and B contain two or more atoms that are chemically bonded.C. Liquid A has varying boiling points while liquid B has a fix boiling point.D. Liquid A maybe homogenous or heterogeneous but substance B is not.For item number 8, two liquids were observed and heated. The data gathered is shown in thetable below.Temperature ('C)At start of boilingAfter 30 secLiquid ALiquid B8010010085After 60 secAfter 90 sec10084100868. Based on the table above, which of the following is TRUE about Liquid A?A. It has a fixed boiling point.B. It is heterogeneous.9. Angelica wants to separate the marbles in a jar full of water. Which of the following is theC. It is a mixture.D. It is an element.BEST way to separate the mixture?A. DecantationB. DissolvingC. EvaporationD. Using a magne

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Answered: its to compare the properties of two…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter1: The Nature Of Chemistry

Section: Chapter Questions

Problem 94QRT

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solution is a homogeneous mixture. Can you give an example of a gaseous homogeneous mixture? A liquid homogeneous mixture? A solid homogeneous mixture?
Potassium sulfate has a solubility of 15 g/ 100 g water at 40C. A solution is prepared by adding 39.0 g of potassium sulfate to 225 g of water, carefully heating the solution, and cooling it to 40C. A homogeneous solution is obtained. Is this solution saturated, unsaturated, or supersaturated? The beaker is shaken, and precipitation occurs. How many grams of potassium sulfate would you expect to crystallize out?
What properties distinguish solids from liquids? Liquids from gases? Solids from gases?
If iron filings are placed with excess powdered sulfur in a beaker, the iron filings are still attracted by a magnet and could be separated from the sulfur with the magnet. Would this combination of iron and sulfur represent amixtureor apure substance?
A cup of coffee is an example of: a. a liquid pure substance b. a gaseous mixture c. a solid pure substance d. a liquid mixture e. a solid mixture
1f a piece of hard, white blackboard chalk is heated strongly in a flame, the mass of the piece of chalk will decrease, and eventually the chalk will crumble into a white dust. Does this change suggest that the chalk is composed of an element or a compound?
7.The word pour is commonly used in reference to liquids but not to solids or gases. Can you pour a solid or a gas? Why or why not? If either answer is yes, can you give an example?
1.78 Some farmers use ammonia, NH3, as a fertilizer. This ammonia is stored in liquid form. Use the participate perspective to show the transition from liquid ammonia to gaseous ammonia.
True or false? Mixtures always result in a chemical reaction because they consist of two or more substances and thus combine to create a new product.
Which part of the description of a compound or element refers to its physical properties and which to its chemical properties? (a) Calcium carbonate is a white solid with a density of 2.71 g/cm3. It reacts readily with an acid to produce gaseous carbon dioxide. (b) Gray, powdered zinc metal reacts with purple iodine to give a white compound
You have learned the basic way in which scientists analyze problems, propose models to explain the systems under consideration, and then experiment to test their models. Suppose you have a sample of a liquid material. You are not sure whether the liquid is a purecompound(for example, water or alcohol) or asolution. How could you apply the scientific method to study the liquid and to determine which type of material the liquid is?
You receive a mixture of table salt and sand and have to separate the mixture into pure substances. Explain how you would carry out this task. Is your method based on physical or chemical properties? Explain.

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