AP cumulative test review 2(semester 1)

Front

What is electron affinity?

Back

Electron affinity is the amount of energy released when an electron is added to a neutral atom in the gas phase. It indicates how much an atom wants to gain an electron.

Front

Which element has the most negative electron affinity?

Back

Fluorine (F) has the most negative electron affinity, meaning it releases the most energy when gaining an electron.

Front

What percentage of elements on the periodic table are metals?

Back

Most elements on the periodic table are metals, making up about 75% of the known elements.

Front

What is the frequency of violet light?

Back

The frequency of violet light is approximately 9.5 x 10^14 Hz.

Front

How do you calculate the wavelength of light?

Back

Wavelength (λ) can be calculated using the formula λ = c/f, where c is the speed of light (3.00 x 10^8 m/s) and f is the frequency.

Front

What is the wavelength of violet light with a frequency of 9.5 x 10^14 Hz?

Back

The wavelength of violet light is approximately 3.15 x 10^-7 m.

Front

What are acidic oxides?

Back

Acidic oxides are oxides that react with water to form acids or react with bases to form salts.

Front

Which oxide is considered acidic?

Back

Sulfur dioxide (SO2) is an example of an acidic oxide.

Front

What is the relationship between frequency and energy of light?

Back

The energy (E) of light is directly proportional to its frequency (f), given by the formula E = hf, where h is Planck's constant (6.626 x 10^-34 J·s).

Front

What is the energy of light with a frequency of 4.5 x 10^14 Hz?

Back

The energy of light with a frequency of 4.5 x 10^14 Hz is approximately 2.98 x 10^-19 J.