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Chemistry
Unit 3 Concept 1: Introduction to Electrons
| Question | Answer |
|---|---|
| Explain both the wave and particle natures of electrons. | Electrons have both wave and particle nature. The energy an electron holds can be deposited at a point. Thus, it behaves as a particle. Also, electrons move sporadically like waves. |
| Explain the relationship between electrons, energy, and electromagnetic radiation. | Electrons are subatomic particles with a negative charge. Electromagnetic radiation is a form of energy that exhibits wavelike behaviors as it travels through space. |
| Summarize the mathematical relationship between the speed, wavelenght and frequency of electromagnetic radiation. | speed of light equals wavelength times frequency. |
| On the EMS, which type of radiant has the lowest frequency? Longest wavelenght? Highest energy? | Radio waves, Radio waves, Gamma rays. |
| Explain or draw a picture to explain the difference between an electron's ground state vs. excited state, & what impacts it. | Ground state is its default position but when it absorbs energy it jumps up to its excited state. This impacts the amount energy released. |
| Explain what makes an atom stable and what an atom may do to become stable. Identify which element are already stable and why. | Atoms are stable when they have a full outer shell. Some atoms will lose atoms and others will gain atoms to become stable. The noble gases are already stable. |
| Differentiate between cations and anions | Cation have a positive charge and anions have a negative charge. |
| calculate the frequency and energy emitted of red light with a wavelength of 650 nm | V=4.62x10^14Hz E=3.06x10^-19J |
| what color of light will be emitted if an electron drops from n=3 to n=1? Find the frequency and energy of the light. | Its not in the visible spectrum |
| Electrons | Negatively charged subatomic particle |
| Lewis structure | A simple way to show an element and its valence electrons. |
| Wavelength | A unit of distance for measuring waves. |
| Frequency | The number of waves that pass a given point in a certan time |
| Emission spectrum | the spectrum of light |
| Heisenberg uncertainty principle | It is impossible to determine the position and velocity of an electron or other particle simultneously. |
| Valence electrons | electrons on the outermost shell |
| Octet rule | The tendency of atoms to prefer 8 valence electrons |
| Electromagnetic radiation | a form of energy that exhibits wavelike behaviors as it travels through space. |
Created by:
Kamryn7
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