A chemical property is a characteristic of a pure substance that describes its ability to change into different substances. For example, a chemical property of methane is that it can catch fire and burn in air. Physical properties can be observed or measured without changing the composition of matter.
The downsides are obvious: Almost everyone has headphones, speakers, and other gadgets based on the ubiquitous 3.5 mm headphone jack. Eliminating this connection could render these devices unusable, or at least force everyone to carry around an extra adapter. But Apple doesnât care.
Method 2 Headphone Jack speakers. 1. If your speaker's plug is circular, chances are it fits in the headphone jack. If so, locate the headphone jack on your computer. 2. Plug the connector into the headphone slot. 3. Set the volume to a comfortable level.