The types of chemical changes that are discussed here include combination and decomposition. Combination happens when two or more substances combine together in a chemical reaction to form one or more different substances. Combination reactions can result in the corrosion of metals like iron with oxygen from the air. Combustion reactions, such as a burning candle, are also examples of the chemical change through the combination of wax and oxygen in a reaction that produces heat, light, carbon dioxide and water.
When running iOS 7 or iOS 8, all iPhone models use Helvetica Ultra Light or Helvetica Light. Finally, when running iOS 9, all iPhone models use a font that is fairly similar to Helvetica, but that Apple calls San Francisco and that is shared by the Apple Watch. iPod models released prior to the iPhone use either Chicago, Espy Sans, or Myriad and use Helvetica after the release of the iPhone.
Paste or type your emoticon into the Phrase field. 5. Type the shortcut that you want to use into the Shortcut field. It's crucial that you don't type a phrase that you use for other things, as the shortcut will get replaced any time it is used.1  A common trick is to use HTML-style tags as the phrase. Click Keyboard, select the Keyboard tab, and then check the Show Keyboard & Character Viewers in menu bar. 2  Click the new icon that appears next to the clock, and select Show Character Viewer. 3  OS X comes with all of the fonts you need to make most Eastern emoticons.