A student mixed two chemicals (system) to allow them to react. The thermometer (surroundings) recorded the temperature before the reaction at 18°C and after the reaction at 25° C.
Question 1
1.
Question 2
2.
Question 3
3.
Question 4
4.
Explain why breaking bonds is considered an endothermic process?
Question 5
5.
Question 6
6.
Question 7
7.
Question 8
8.
Explain how this graph shows that the two objects reached thermal equilibrium
Which of the following is true?
The kinetic energy of the molecules increases as a result of this reaction
The kinetic energy of the molecules decreases as a result of this reaction
How did heat flow in this reaction?
from the surroundings into the system
from the reaction system into the surroundings
Is this an endothermic or exothermic reaction? Explain your reasoning in 1 sentence or less. Click on Show Work and type in response using the text box (T) button.
Exothermic
Endothermic
Which is true?
The ice has weaker forces of attraction between molecules than the liquid water
The strength of the forces between the molecules of both ice and liquid water are the same
The ice has stronger forces of attraction between molecules than the liquid water
Which is true?
Heat energy from the ice is released to the counter,decreasing the forces between molecules and increasing their temperature
Heat energy from the ice is released to the counter,increasing the forces between molecules and decreasing their temperature
Heat energy from the counter enters the ice,decreasing the forces between molecules and increasing their temperature
Heat energy from the counter enters the ice, decreasing the forces between molecules and decreasing their temperature
