SCHS Chemistry Pre-Test

Front

What is the formula to calculate the energy of a photon?

Back

The energy of a photon can be calculated using the formula: E = h * f, where E is energy, h is Planck's constant (6.626 x 10^-34 J·s), and f is the frequency of the radiation.

Front

What is ionization energy?

Back

Ionization energy is the amount of energy required to remove an electron from an atom or ion in its gaseous state.

Front

Why does fluorine have a higher ionization energy than iodine?

Back

Fluorine's valence electrons are closer to its nucleus than iodine's, making it harder to remove an electron from fluorine.

Front

What is the chemical formula for vanadium(III) sulfide?

Back

The chemical formula for vanadium(III) sulfide is V₂S₃.

Front

How do you calculate the volume of an object given its mass and density?

Back

Volume can be calculated using the formula: Volume = Mass / Density.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.

Front

What does a positive charge on an ion indicate?

Back

A positive charge indicates that the ion has lost one or more electrons.

Front

What is the significance of the periodic table in chemistry?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What is the relationship between frequency and wavelength in electromagnetic radiation?

Back

The relationship is given by the equation: c = λ * f, where c is the speed of light, λ is the wavelength, and f is the frequency.