To change the theme in Photoshop, follow these steps:

1. Open Photoshop and go to the "Preferences" menu. You can find this by going to Edit in Preferences on a Windows computer, or Photoshop Preferences on a Mac. 2. In the Preferences menu, select the "Interface" option. 3. Under the "Interface" tab, you will see a drop-down menu labeled "UI Theme." Use this menu to select the theme you want to use. 4. After you have selected your desired theme, click "OK" to apply the changes. The theme will be changed the next time you start Photoshop. Note that the available themes may vary depending on the version of Photoshop you are using. Some themes may also require you to have a Creative Cloud subscription to use.

Chemistry

What is chemistry?

Chemistry is a physical science, and it is the study of the properties of and interactions between matter and energy. In other words, chemistry is a way to study the properties, characteristics, and physical and chemicalchanges of matter.

Branches of Chemistry

Science. There are many branches of chemistry or chemistry disciplines. The 5 main major branches of chemistry are considered to be 

1- organic chemistry

2- inorganic chemistry

3- analytical chemistry

4- physical chemistry

5- and biochemistry