# sulfur and oxygen formula

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November 29th, 2020

Write the word on the line below. In the following activity we are going to review word equations, picture equations and chemical equations, using the reaction between sulfur and oxygen as our context. The energy in coal comes from the energy stored in plants and other organisms that lived hundreds of millions of years ago. An important chemical difference between metal and non-metal oxides is that when metal oxides dissolve in water, they form basic solutions and when non-metal oxides dissolve in water, they form acidic solution. The number of moles of S = 60/32 = 1.875. The first one is one that you are already familiar with, namely the reaction of carbon and oxygen. You wrote the word equation for the reaction between sulfur and oxygen above. Sulfur dioxide is sometimes used as a preservative for dried fruits, such as dried peaches and apricots and the guava rolls that so many of us love to eat. Early chemists used the term oxidation for all reactions in which oxygen was a reactant. 2 H2 + O2 → 2 H2O. Except where otherwise noted, this site is covered by a closed copyright license. Carbon and sulfur both form dioxides with oxygen, but this is not true of all non-metals. Rather, the SO2 molecule is believed to have a bent shape, as it appears in the picture equation. phosphorus + oxygen → diphosphorus pentoxide. We will learn more about this later on in the term. Now, I can actually look at these ratios and figure out what the formula is. The common name is water and the systematic name is dihydrogen monoxide. Now, use the formulae of the reactants and products to write a chemical equation. This content is not included in CAPS (as part of the Grade 9 Matter and Materials requirements). Sulfur (EN = 2.58) is much less electronegative than oxygen (EN = 3.44). Why do you say so? This will also link to what learners will cover next term in Energy and Change. This equation is already balanced. What happens when a non-metal and oxygen react? The non-metal and oxygen gas (O2) are the reactants in this type of reaction, and a non-metal oxide is the product. Terms and Conditions and Privacy Policy. (If you are unsure how to name it, sneak a peek at the first chapter!). How many oxygen atoms are in P2O5? Compounds that are reactive will readily react with many other substances. See if you can write down the formula for sulfur dioxide before we carry on. What will you fill in for the products when the two different non-metals react with oxygen during combustion? Is this correct? What is the empirical formula of a compound containing 60% sulphur and 40% oxygen? You can also get learners to construct the equation by using sheets of white paper and drawing a '+' and '$$\rightarrow{}$$. Write its name and formula. Use play dough or clay to build models of the reactants and products of the reaction. We will look at this in more detail next term in Energy and Change. What is the systematic name of the product of this reaction? Since the explanation for this shape requires some understanding of bonding models, which are beyond the scope of this level of the curriculum, we recommend that you do not 'go there', but accept 'linear' drawings of the SO2 molecule as correct. A preservative is a chemical compound that is added to a product (such as a foodstuff or a beverage) to make it last longer. Let's look at a few specific examples of reactions in which non-metals react with oxygen. Where do we find non-metals on the Periodic Table? Since chemical reactions can seem quite abstract to learners and learning about them in isolation may seem to them as if it lacks relevance, we have also attempted to provide some real-world context to the examples in this chapter. And then they must rearrange the atoms to form the product as shown here: You can also repeat this exercise with the other reactions covered so far. What is the common name of the product of this reaction? For each of the following reactions, complete the tables by providing the missing equations. The non-metal is Sulfur (S). The only difference is that the word 'metal' has been replaced with 'non-metal' on both sides of the equation. Wind energy, solar energy, biofuels, nuclear energy (the latter is not strictly renewable). Learner's paragraph should contain at least the following ideas: SO2 is used as a preservative in many foods, including dried fruit and wine. If learners do not have coloured pens or pencils, they can use patterns and shading to differentiate between different atoms. [5 marks]. Screen capture done with Camtasia Studio 4.0. Hydrogen and oxygen also react spectacularly. The topic of chemical reactions is an abstract one and it often helps to provide some real-world applications to link it to other, less abstract including learners' own experience. All rights reserved. The reactions of carbon and sulfur with oxygen are examples of non-metals reacting with oxygen. The sulfur oxoacids are chemical compounds that contain sulfur, oxygen, and hydrogen.The … Convert the picture equation into a chemical equation. The reaction is between hydrogen and oxygen. Draw a picture equation for the reaction, using the example of carbon above as guide. The definition of an oxidation reaction is broader and includes other reactions which you will learn about in Gr. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo). Oxygen is all around us in the air we breathe. Do all non-metals form dioxides with oxygen? What are the reactants of this reaction? The molar mass of O = 16. The systematic name of a compound is the name that is recognised by IUPAC. 4.1 The general reaction of non-metals with oxygen (0.5 hours), 4.2 The reaction of carbon with oxygen (1 hour), 4.3 The reaction of sulfur with oxygen (1 hour), Activity: The reaction between sulfur and oxygen, Analysing, balancing chemical equations, drawing, modeling. The number of moles of O = 40/16 = 2.5. You might not cover this section in class as it is an extension. The energy released by burning coal is used to generate electrical energy in coal-powered power stations. What group is sulfur in on the Periodic Table? 4. Since both central examples of this chapter result in non-metal dioxides (viz. 37% of the electricity generated worldwide is produced from coal. How to Balance S + O2 = SO2 (Sulfur + Oxygen gas) - YouTube Ask your learners this question to see what they can remember. Coal is a form of carbon and when it burns in oxygen we can represent the reaction with the following word equation: Draw a picture equation for this reaction in the space below. Chemists have evidence that the actual shape of the SO2 molecule is not linear; in other words, the atoms do not all lie in a straight line as they do in CO2. The non-metal is Sulfur (S). Some of the skills that we practised during this chapter were: writing equations (word, picture and chemical equations) and naming compounds. The purpose of the candle shown in the picture is to set the hydrogen gas alight, in other words: to provide enough energy for the reaction to start. Once again, the translation between word equation, picture equation and chemical equation is reinforced with exercises and examples. As the name implies, its constituent elements are sulfur and oxygen. IUPAC refers to the International Union of Pure and Applied Chemistry. When an element is reactive, it means that it will readily react with many other substances. There are no demonstrations prescribed by CAPS for this chapter, but we have included colourful photographs to provide learners with some experience of the splendour of these reactions. ), A slow motion video of a hydrogen-filled balloon exploding in air. (You can watch the video in the visit box to see this in slow motion. Germany. Which non-metal do you think reacts with oxygen to form sulfur dioxide? Can you think of the names of some alternative, renewable energy sources? Here is a hint: What does the di- in dioxide mean? Sulfur trioxide has the formula SO3, which means it contains one sulfur atom and three oxygen atoms.