iii. However, it does not readily react with oxygen. Iron: Iron glows very brightly. Chapter 10: Reactions of non-metals with oxygen. This tells us that it does not react the same way as iron does with oxygen. We are going to look at two of the reactions shown previously in greater detail in this chapter. Aluminium does not react with water, because it forms a tough protective layer of aluminium oxide, "Al"_2"O"_3, on its surface. Exercise caution when burning the steel wool, as sparks may be produced. Chromium metal does not react with air or oxygen at room temperature. Magnesium is in group 2 in the Periodic Table. The residue is reddish- brown when hot and cold. Getting enough copper and zinc helps ensure that you can effectively clear away reactive oxygen species, so that your cells can continue to function properly. The pictures below will provide some clues. Then, you must decide whether or not zinc will react with water in the first place. ii. Iron can be transformed to steel (an alloy), which is more resistant to rust. Oxygen also does not normally react with bases or acids. Magnesium has a very energetic combustion reaction with oxygen, where two atoms of magnesium bond with one molecule of oxygen gas to form two molecules of magnesium oxide. The top metals are more reactive than the metals on the bottom. 3.1 The reaction of iron with oxygen (1 hour), Activity: Three different levels of interpretation in science, Sorting and classifying, interpreting, identifying, Activity: The reaction of iron with oxygen, Demonstration of steel wool burning, observing, recording, communicating, describing, 3.2 The reaction with magnesium and oxygen (1 hour), Activity: The reaction of magnesium with oxygen, Demonstration of magnesium burning, observing, recording, communicating, describing, 3.3 The general reaction of metals with oxygen (0.5 hours), Activity: The reaction between iron and oxygen in air. The zinc reacts slower with the steam than magnesium and does not glow brightly as it is converted to zinc oxide. Reaction of oxygen with air. Zinc metal burns in air to form the white zinc (II) oxide, a material that tirns yellow on prolonged heating. In the formula, M represents a metal atom and O represents oxygen. The products are all metal oxides. Zinc powder is added to a solution of iodine in ethanol. However, hot zinc(Zn) reacts readily with steam to produce zinc oxide and hydrogen gas. Look at the Periodic Table at the front of the book, pick any two metals from group 1 and write their formulae using this rule. Write the word equation for the reaction between iron and oxygen and for the reaction between magnesium and oxygen. When a metal reacts with oxygen, a metal oxide forms. If you are not convinced of this, find them on the Periodic Table below in the front of your book. [3 marks], Complete the table by providing the missing equations for the reaction between iron and oxygen [4 marks], Complete the table by providing the missing equations for the reaction between magnesium and oxygen [4 marks], Complete the table by providing the missing equations for the reaction between copper and oxygen [4 marks], Complete the table by providing the missing equations for the reaction between zinc and oxygen [6 marks], http://www.flickr.com/photos/rockandrollfreak/7697586652/, http://en.wikipedia.org/wiki/File:1909_Victor_Flash_Lamp.jpg, http://www.flickr.com/photos/flattop341/347445202/, http://www.flickr.com/photos/mikebaird/4585328947/, http://www.flickr.com/photos/lizjones/449708229/, http://www.flickr.com/photos/a2gemma/2373078360/, http://www.flickr.com/photos/49889874@N05/4883527730/, http://www.flickr.com/photos/ell-r-brown/5375682861/, http://www.flickr.com/photos/sbeebe/5225048839/, http://www.flickr.com/photos/a_mason/3212274/, http://www.flickr.com/photos/cwisnieski/5947754467/, http://www.flickr.com/photos/johnloo/5289139290/, http://www.flickr.com/photos/ants88/6846263748/, http://humantouchofchemistry.com/why-do-cut-apples-turn-brown.htm, The general reaction of metals with oxygen.

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