Physical and Chemical Changes — CHEMISTRY STD 7 — Question
ICSE BoardEnglish MediumSTD 7CHEMISTRYPhysical and Chemical Changes4 Marks
Question
What is a combination reaction ? Give one example of it.
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Answer
A type of chemical reaction in which two or more substances (element or compounds) combine to form a new substance (a compound) is called as a combination reaction. Generally, it is represented as : A + B → AB Example: (i) Formation of hydrogen chloride (ii) Burning of coal (carbon)
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