Electron Behavior and Charge Concepts

The video tutorial covers the electromagnetic spectrum, focusing on the visible spectrum and the properties of colors such as wavelength, frequency, and energy. It explains the direct and inverse relationships between these variables. The tutorial also discusses how electron transitions relate to color energy, detailing the emission and absorption spectra. Finally, it covers valence electrons and ion formation, explaining how elements gain or lose electrons to form ions.

Which color of light has the longest wavelength and lowest frequency?

• Red

• Green

• Blue

• Violet

What type of relationship exists between frequency and energy?

• Direct

• Inverse

• No relationship

• Cyclic

When an electron moves from a ground state to an excited state, what happens?

• It absorbs energy

• It emits light

• It loses energy

• It remains stable

What is observed when an electron returns to a lower energy level?

• Absorption of light

• Increase in wavelength

• Emission of light

• No change

What is the difference between absorption and emission spectra?

• Both show all colors

• Both show no colors

• Absorption shows all colors, emission shows none

• Absorption shows missing colors, emission shows specific colors

What happens to an element when it loses an electron?

• It gains a proton

• It remains neutral

• It becomes an anion

• It becomes a cation

Which group of elements typically has one valence electron?

• Alkali metals

• Noble gases

• Halogens

• Transition metals

What charge does an element have after gaining two electrons?

• -1

• +1

• -2

• +2

What is the charge of an anion?

• Variable

• Neutral

• Negative

• Positive

Which of the following is a characteristic of cations?

• They are non-metals

• They have a negative charge

• They lose electrons

• They gain electrons