What are the results of a expirament

Gas cloud 1 is likely to form a star. gas cloud 2 is not. based on this information, match the given conditions with each cloud

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather