Answer:
A substance which has two or more substances combined chemically is called pure chemical compounds.
Step-by-step explanation:
When two or more substances combined together a new substance is formed. If this combination occurs chemically it is called as pure chemical compound.
These pure chemical substances are have same properties throughout sample. A pure substance take part in a chemical reaction to shape in expected products.
Water, table salt, Baking soda and table salt are chemically pure substances. Pure water is one of the example for pure chemical substance.