Which of the following statements are true? When a system loses energy its energ

Question

Which of the following statements are true? When a system loses energy its energy goes up When a system loses energy the surrounding's energy goes up A combustion reaction, like a candle burning, loses energy and so the surroundings get hot. A combustion reaction, like a candle burning, gains energy and so the surroundings get cool. In a chemical reaction, the "system" is the chemicals involved in the reaction and the "surroundings" is everything else. In a chemical reaction, the "system" is the chemicals involved in the reaction and the beaker that contains them, the "surroundings" is everything outside of the beaker.

Explanation / Answer

(1) when a system looses energy its energy goes down, so the given statement is FALSE

(2) when a system looses energy its energy goes down & the surroundings will goes up so the given statement is TRUE

(3) & (4) A combustion reaction is the one in which the system utilises energy & produce heat(energy) to the surroundings.

    So the third statement is TRUE

         the fourth statement is FALSE

(5) In a chemical reaction the system is the chemicals involved in the reaction & the surroundings is the every thing else which is a TRUE statement.

(6) In a chemical reaction the system is the chemicals involved in the reaction and the beaker contains them& the surroundings is the every thing else which is a TRUE statement.

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