Chemistry chapter 5

47 terms by BHolden

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Electromagnetic radiation is a kind of ___ that behaves like an ___ as it travels through space.

Energy, wave

___ is one type of electromagnetic radiation.

Light

All waves can be characterized by their wavelength, amplitude, frequency, and ___

Speed

The shortest distance between equivalent points on a continuous wave is called an ___

Wavelength

The height of the wave from the origin to the crest or from the origin to the trough is the ___

Amplitude

___ is the number of waves that pass a given point in one second.

Frequency

The Si unit for frquency is the ___, which is the equivalent of one wave per second.

Hertz

An __ is the minimum amount of energy that can be lost or gained by an atom.

Quantum

According to Plank's theory, for a given frequency, v, matter can emit or absorb energy only in ____ ____ ____ __ __.

Whole number multiples of hv

The ____ is the phenomenon in which electrons are emitted from a metal's surface when light of a certain frequency shines on it.

Photoelectric effect

Which equation would you choose to calculate the energy of a photon?

Ephoton=hv

T or F - Like the visible spectrum, an atomic emission spectrum is a continuous range of colors.

False

T or F - Each element has a unique emission spectrum.

True

T or F - A flame test can be used to identify the presence of certain elements in a compound.

True

T or F - The fact that only certain colors appear in an element's atomic emission spectrum indicates that only certain frequencies of light are emitted.

True

T or F - Atomic emission spectra can be explained by the wave model of light.

False

T or F - The neon atoms in a neon sign emit their characteristic color of light as they absorb energy.

True

T or F - When an atom emits light, photons having certain specific energies are being emitted.

True

The lowest allowable energy state of an atom is called its ___

Ground state

Bohr's model of the atom predicted the ___ of the lines in hydrogen's atomic emission spectrum.

Frequencies

According to Bohr's atomic model, the smaller an electron's orbit, the ____ the atom's energy level.

Lower

According to Bohr's atomic model, the larger an electron's orbit, the ____ the atom's energy level.

Higher

Bohr proposed that when energy is added to a hydrogen atom, its ____ moves to a higher-energy orbit.

Electron

According to Boh'rs atomic model, the hydrogen atom emits a photon corresponding to the difference between the ____ ___ associated with the two orbits it transitions between.

Energy levels

Bohr's atomic model failed to explain the ____ of elements other than hydrogen.

Atomic emission spectrum

The _____ ____ model of the atom that treats electrons as waves.

Quantum mechanical model

______ ____ ____states that it is impossible to know both the velocity and the position of a particle at the same time.

Heisenberg's uncertainty principle

A 3-D region around the nucleus representing the probability of finding an electron.

Atomic orbital

____ ____ ____ originally applied to the hydrogen atom, it led to the quantum mechanical model of the atom.

Schrodinger wave equation

Atomic orbitals (do, do not) have an exactly defined size.

Do not

Each orbital may contain at most (two, four) electrons.

Two

All s orbitals are (Spherically shaped, dumbbell shaped)

Spherically shaped

A principal energy level has (n, n^2) energy sublevels.

N

The maximum number of (Electrons, orbitals) related to each principal energy level equals 2n^2

Electrons

There are (three, five) equal energy p orbitals.

Three

Hydrogen's principal energy level 2 consists of (2s & 3s, 2s & 2p) orbitals.

2s & 2p

Hydrogen's principal energy level 3 consists of (nine, three) orbitals.

Nine

The arrangement of electrons in an atom is called the atom's ____

Electron configuration

Electrons in an atom tend to assume the arrangement that gives the atom the ____ possible energy.

Lowest

This arrangement of electrons is the most ____ arrangement and is called the atom's ________

Stable, ground - state electron configuration

The __________ states that each electron occupies the lowest energy orbit available.

Aufbau principle

The ______ _____ ____states that a maximum of two electrons may occupy a single atomic orbital, but only if the electrons have opposite ____.

Pauli exclusion principle, spins

_____ states that single electrons with the same spin must occupy each degenerate orbital before additional electrons with opposite spins occupy the same orbitals.

Hund's rule

The electrons in an atom's outermost orbitals are called ____

Valence electrons

In an electron dot structure, the element's symbol represents the ____

Atom's nucleus and inner-level electrons

How many valence electrons does a chlorine atom have if its electron configuration is [Ne] 3s^2 3p^5

7

Which electrons are represented by dots in an electron- dot structure?

Valence electrons

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