Determine whether the following is considered a chemical change or not: A candle is burned. Which change is a physical change? (a) Wood burning (b) Iron rusting (c) Dynamite exploding (d) Gasoline evaporating. Decide whether a physical or a chemical change is involved. Dissolvi...
vinegar is a homogeneous mixture of ethanoic acid and water. Heterogeneous Mixtures - the (two or more) substances that form the mixture are not evenly distributed throughout the mixture, e.g. oil and water. Solutions - special type of homogeneous mixtures in which one substance (called the ...
Answer and Explanation:1 The answer is D) Burning Coal. Burning coal involves a chemical change since the chemical composition of the substance changes. When coal is...
Preface: As we all know, vinegar is very healthy for human body. And this article will mainly talk about the benefits of vinegar on children's health. First of all, vinegar can stimulate the secretion of gastric acid and promote the digestion. As a result, for the children who lack of ...
I am doing a lab right now and my book gives me the density of vinegar is 1.01 g/mL (but of course the more concentrated one has a higher density but it said to ignore that.) My teacher never said anything about this question and one of my friend's book has the number crossed out...
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Likehorseradishsauce, mustard is made from a cruciferous vegetable with chemopreventive properties. The bright yellow mustard common in the U.S. is produced by mixing the ground seeds of the white or yellow mustard plant (Sinapis alba) into a paste with the addition of water,vinegar,turmericand...
A well-known basic titration example is the titration of acetic acid (CH3COOH) in vinegar with sodium hydroxide (NaOH): More information of what titration is, can be found at theBasics of Titrationguide. Titration explained: This video shows the basics of titration theory and details the advant...
Lemons are extremely acidic. Any chemical with apHless than 7 is considered acidic. Lemon juice has a pH of around 2.0, ranging between 2 and 3. To put that in perspective, the pH ofbattery acid(sulfuric acid) is 1.0, while the pH of an apple is about 3.0. Vinegar (a weak acetic ...
pH Scale: The pH scale ranges from 0 - 14. Any substance with a pH lower than 7 is acidic, above 7 is alkaline (basic), and at 7 is neutral. Examples of substances with a pH lower than 7 include vinegar, cit...