Question

1.substances substances can be classified into two types...... and .......
2.chemical that combines two or more element is called..........
3. ............ is the insoluble substances of solutions
4.The reaction in which energy is released is called ..........
5.The reaction in which heat is absorbed are called
6.The temperature at which Boling happens is called.........
7. The process of forming crystal of solid from it's solution is called ..........




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Answer 1

Answer:

1. physical and chemical
2. chemical compound
3. -------
4. chemical reaction
5.  endothermic reaction
6. 100° C (212° F)
7. Crystallisation

Answer 2

Answer:

• 1 . elements or compound
• 2.compound
• 3.Insoluble" generally means that a substance does not dissolve in water
• 4.The reaction in which heat energy is released is called Exothermic Reaction.
• They have △H i.e; Enthalpy change as negative.
• 5.