An experiment gives the value of mass of the same object as 23.5 Kg in 1st attempt, 30 Kg in the second attempt, 25 kg in 3rd attempt. But the real mass of object is 28 Kg. Which of the following statement is correct about the experiment 1) experiment is precise
2) experiment is not precise

2

Explanation:

I'm not sure but I think the answer is 2 because even the average of the 3 values is not quite close 28 Kg.

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.