Question

when two or more elements combine chemically they form


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Answer 1

COMPOUNDS

When two or more elements combine to form a new substance, it is called a compound. There are many different types of compounds, because atoms of elements combine in many different ways to form different compounds. Examples include water (H2O) and table salt (NaCl). The smallest part of a compound is a molecule.

Answer 2

Answer:

when two or more elements combine then they form compounds.

for example

H2 + O2 ====> 2H20

here hydrogen and oxygen are combining to form a compound ( di hydrogen monoxide) water.