pls i need expert answer fast
Dear student,
Pure substances are substances that have a fixed composition. The two types of pure substances are elements and compounds.
An element consists of only one type of particle. These particles may be atoms or molecules. For example Sodium, Silver, Hydrogen, etc.
A compound consists of two or more atoms of different elements chemically combined together. For example water (H2O), ammonia (NH3), etc.
Regards
Pure substances are substances that have a fixed composition. The two types of pure substances are elements and compounds.
An element consists of only one type of particle. These particles may be atoms or molecules. For example Sodium, Silver, Hydrogen, etc.
A compound consists of two or more atoms of different elements chemically combined together. For example water (H2O), ammonia (NH3), etc.
Regards