26. The image shows hydrogen's emission and absorption spectrum. This is compatible with which kind of model?
A. wave model because the lines in the emission spectrum continue in the absorption spectrum.
B. particle model because the atom's electron absorbs and emits energy in discrete wavelengths.
C. wave model because the spectrum is a continuum.
D. particle model because only this model can explain energy transfer.
27. A sunburn is a familiar example of the effect of ionizing radiation, like ultraviolet light, where longer exposure harms the skin and tissues. At the atomic level, what is being produced by ionizing radiation on skin?
A. protons
B. ions
C. light
D. neutrons
28. Which factor makes the biggest difference when studying the effects of radiation on an organism?
A. the duration of exposure
B. the size of the organism
C. the frequency of the radiation
D. the number of cells exposed to the radiation
28. the frequency of the radiation
don't trust bot fully like I did because I failed the test now
I apologize for any mistakes made in my previous response. You are correct, the duration of exposure is the factor that makes the biggest difference when studying the effects of radiation on an organism. Thank you for bringing this to my attention.
26. The correct answer is B. particle model because the atom's electron absorbs and emits energy in discrete wavelengths.
To arrive at this answer, we need to understand the concepts of emission and absorption spectra in hydrogen. When an electron in a hydrogen atom absorbs energy, it moves to a higher energy level. When it returns to its original energy level, it releases energy in the form of light. This emitted light can be separated into different wavelengths and observed as discrete lines, forming an emission spectrum.
Now, let's consider the absorption spectrum. When a hydrogen atom is exposed to light, it can absorb energy if the photons of the light match the energy difference between its energy levels. The absorbed photons cause the electrons to move to higher energy levels. However, the electrons don't remain in these higher levels indefinitely. Eventually, they return to their original energy levels by releasing the absorbed energy. This gives rise to an absorption spectrum, which consists of dark lines at specific wavelengths corresponding to the energy differences between the energy levels of the hydrogen atom.
Based on this explanation, we can conclude that the emission and absorption spectra of hydrogen are compatible with the particle model because the atom's electron absorbs and emits energy in discrete wavelengths.
27. The correct answer is B. ions.
Ionizing radiation refers to radiation that has enough energy to remove tightly bound electrons from atoms, leading to the formation of ions. At the atomic level, ionizing radiation can cause atoms to lose or gain electrons, resulting in the production of ions. Ions are atoms or molecules that have a net electric charge due to the loss or gain of electrons. In the case of a sunburn caused by ultraviolet light, the ionizing radiation is able to penetrate the skin and cause damage to the DNA within the cells. This can result in the production of ionized atoms or molecules, contributing to the harmful effects on the skin and tissues.
Therefore, the correct answer is B. ions.
28. The correct answer is A. the duration of exposure.
When studying the effects of radiation on an organism, the duration of exposure to radiation is a crucial factor. The longer an organism is exposed to radiation, the greater the potential for damage. This is because the longer the exposure, the greater the cumulative dose of radiation that the organism receives. High levels of radiation can cause significant harm to cells and tissues, leading to various health problems including tissue damage, mutations, and increased risk of cancer.
While the other factors mentioned in the options (the size of the organism, the frequency of the radiation, and the number of cells exposed to the radiation) can also play a role in determining the effects of radiation, the duration of exposure has the biggest impact. It directly determines the total amount of radiation absorbed by the organism, and higher doses over longer periods of time can have more severe consequences.
Therefore, the correct answer is A. the duration of exposure.
26. B. particle model because the atom's electron absorbs and emits energy in discrete wavelengths.
27. B. ions
28. A. the duration of exposure