Hi! I saw that you were making an effort to add images to articles (e.g. AgNO3 and slushii) but were using the full image URLs to do so. For future reference, you can add an image to an article with the following code:
With "Imagename" being the name of the image and "extension" being the file extension (e.g. .png, .jpg). You can leave the 250px part as it is – that's for sizing the image.
Other than that, thank you for your contributions so far. :)