FREE AND STUDY GAMES ABOUT CHAP 5 CHEM EXAM

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FREE AND STUDY GAMES ABOUT CHAP 5 CHEM EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -31 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: hertz

Answer:

the SI unit for frequency is ____ which is equivalent to one wave per second

Question 2: frequency

Answer:

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

Question 3: valence electrons

Answer:

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

Question 4: frequencies

Answer:

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

Question 5: whole number multiples of hv

Answer:

according to planck's theory, for a given frequency, v, matter can emit of absorb energy only in

Question 6: Heisenberg uncertainty principle

Answer:

states that it is impossible to know both the velocity and the position of the particle at the same time

Question 7: electron

Answer:

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

Question 8: Light

Answer:

one type of electromagnetic radiation

Question 9: true

Answer:

when an atom emits light, photons having certain specific energies are being emitted

Question 10: false

Answer:

atomic emission spectra can be explained by the wave model of light

Question 11: atomic emissions spectrum

Answer:

Bohr's model failed to explain ______ of elements other than hydrogen

Question 12: energy, wave

Answer:

electromagnetic radiation is a kind of_______ that behaves like a _______

Question 13: photoelectric effect

Answer:

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

Question 14: true

Answer:

a flame test can be used to identify the presence of certain elements in a compound

Question 15: higher

Answer:

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

Question 16: true

Answer:

each element has a unique atomic emission spectrum

Question 17: atoms nucleus and inner level elecrons

Answer:

in an electron-dot structure, the elements symbol represents the

Question 18: Valence electrons

Answer:

the electrons in an atoms outermost orbitals are called

Question 19: false

Answer:

the neon atoms in a neon sign emit their characteristic color of light as they absorb energy

Question 20: amplitude

Answer:

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

Question 21: atomic orbital

Answer:

a three-dimensional region around the nucleus representing the probability of finding an electron

Question 22: true

Answer:

the fact that only certain colors appear in an element's atomic emission spectrum indicates that only certain frequencies of light are emitted

Question 23: wavelength

Answer:

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

Question 24: energy levels

Answer:

hydrogen atom emits a photon corresponding to the difference between the ________ associated with the two orbits it transitions between

Question 25: ground state

Answer:

the lowest allowable energy state of an atom is called _____

Question 26: false

Answer:

like the visible spectrum, an atomic emission spectrum is a continuous range of colors

Question 27: lower

Answer:

according to Bohr's atomic model, the smaller an electrons orbit, the _____ the atom's energy level

Question 28: Schrodinger wave equation

Answer:

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