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.
If you have MS Word and want to insert a tick into another app that doesn't recognise the Unicode then you can use copy and paste (copy it in Word, paste into other app). Cheers Mick edit: Typical M$ different standards. Just tried it in MS Word using Symbol font-you have to type Alt + 2713 - no leading 0.log Entries. 1. Not all windows apps will let you use Unicode. The key presses should be ALT + [number with a 0 in front]. So for a tick it should be ALT + 02713. If you use MS Word you can use the Insert Symbol on the Menu to go to either Symbol or Wingdings (both have a tick).