Question

1 When the energy is released in the form of heat and
light, it is:
a fire
b a chemical reaction
c light energy
d both (a) and (b)





2 Lowering the temperature below the flash point:
a causes fire
b extinguishes the fire
c lowers the density
d none of the above





Please answer this both question​

Answer 1

───────❁❁───────

1. a chemical reaction

2. lowers the density

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Answer 2

When the energy is released in the form of heat and light, it is: (d) both (a) and (b)

• When a chemical reaction happens, heat can either be generated or get absorbed. The reaction where the heat energy is generated is called the exothermic reaction and the chemical reaction where the heat energy gets absorbed is called the endothermic reaction.
• During a chemical reaction, due to the vibration of the atoms, some light energy is also produced.
• During a fire, heat is generated and light is also produced.

So, the answer is (d) both (a) fire and (b) chemical energy.