Question

question 25 (1 point)
breaking bonds during a chemical reaction requires energy input.
true
false
question 26 (1 point)
data analysis
what do
oticings\ about the bond energies chart mean?
a notes about atomic radius.
b questions about the periodic table.
c predictions about energy levels.
d observations about trends in the data.
question 27 (1 point)
what are chemical reactions called that absorb energy overall and result in a decrease in temperature?
a endothermic reactions
b neutralization reactions
c combustion reactions
d exothermic reactions
question 28 (1 point)
what patterns emerge when comparing bond energies and atomic structure?
a bonds weaken as atoms move across a period.
b bonds strengthen as atomic size decreases.
c bond length has no impact on energy.
d energy is unaffected by periodic trends.

Explanation:

Question 25: Chemical bonds are stable, so energy must be input to overcome the attractive forces holding atoms together and break the bond.
Question 26: "Noticings" in data analysis refer to observed patterns or trends within the given data set, which in this case is the bond energies chart.
Question 27: Endothermic reactions absorb energy from the surroundings, which leads to a decrease in the temperature of the environment.
Question 28: Smaller atomic size means atoms are closer together, leading to stronger electrostatic attractions and thus stronger bonds with higher bond energy.

Answer:

Question 25: True
Question 26: d. Observations about trends in the data.
Question 27: a. Endothermic reactions
Question 28: b. Bonds strengthen as atomic size decreases.