CHEMISTRY

Question 1

is the physical material

of the universe.

Answer 1

Matter

Question 2

is a measure of how closely
individual measurements agree with
one another.

Answer 2

Precision

Question 3

refers to how closely
individual measurements agree with
the correct, or “true” value.

Answer 3

Accuracy

Question 4

1005 kg

Answer 4

4 significant figures

Question 5

7.03 cm

Answer 5

3 significant figures

Question 6

0.02g

Answer 6

1 significant figures

Question 7

0.0026 cm

Answer 7

2 significant figures

Question 8

0.0200 g

Answer 8

3 significant figures

Question 9

3.0 cm

Answer 9

2 significant figures

Question 10

consists of the principal energy
level (n value), the letter designation of the sublevel (l
value), and the number of electrons (#) in the sublevel,
written as a superscript: nl .

Answer 10

Electronic Configuration

Question 11

consists of a box (or just a line) for each
orbital in a given energy level, grouped by sublevel (with nl
designation shown beneath), with an arrow representing
an electron and its spin: ↑ is +1⁄2 and ↓ is -1⁄2.

Answer 11

Orbital Diagram

Question 12

Every atomic orbital within a sublevel is singly occupied
before it is doubly occupied and that all singly occupied
orbitals possess electrons with the same spin.

Answer 12

Hund’s Rule

Question 13

the number of
complete waves, or cycles, that pass a
given point per second; expressed by
the unit 1/s [also called hertz (Hz)].

Answer 13

Frequency (v)

Question 14

the
distance between two adjacent peaks
(or between two adjacent troughs).

Answer 14

Wavelength (lambda)

Question 15

the distance it moves per unit time (meters per
second), the product of its frequency (cycles per second)
and wavelength (meters per cycle):

Answer 15

Speed

Question 16

2.99792458 x 10 ^8

Answer 16

Speed of Light

Question 17

the height of the
crest (or depth of the trough).

Answer 17

Amplitude

Question 18

objects emit electromagnetic radiation
from their surfaces in a temperature-dependent manner.

Answer 18

Blackbody Radiation

Question 19

h= Planck’s constant

Answer 19

6.626 x 10^-34

Question 20

a beam of light falling on a metal
surface in a vacuum ejects electrons from the surface causing
an electric photocurrent to flow.

Answer 20

Photoelectric Effect

Question 21

R= Rydebergs Constant

Answer 21

1.096776 x 10^7 m^-1

Question 22

when a high voltage or flame is
applied to gases at low pressures, atoms absorb and emit a
discrete array of light frequencies, rather than a continuous
spectrum, after passing through a prism.

Answer 22

Atomic Emision Spectra

Question 23

RYDEBERGS EQUATION

Question 24

(1913) linked the three
discoveries of Planck and Einstein
and developed a mathematical
model that explained the behavior
of an electron in a hydrogen atom,
including its atomic line emission
spectrum.

Answer 24

Bohr model

Question 25

(1913) linked the three
discoveries of Planck and Einstein
and developed a mathematical
model that explained the behavior
of an electron in a hydrogen atom,
including its atomic line emission
spectrum.

Answer 25

Bohr model

Question 26

proposed that an electron moving about the
nucleus of an atom behaves like a wave and therefore has a
wavelength. The wavelength of the electron, or of any other
particle, depends on its mass, m, and on its velocity, v:

Answer 26

De Broglie

Question 27

De Broglie’s Equation

Answer 27

lambda = h/mv

Question 28

p=h/lambda

Question 29

states that it is
impossible to measure or calculate exactly, both the
position and the momentum of a particle.

Answer 29

Heisenberg Uncertainty Principle

Question 30

Defines the size and energy

Increased n correlates to
increasing and quantized energy
and radius in the Bohr model.
of an orbital.

Answer 30

Principal Quantum Number (n)

Question 31

Defines the shape of the orbital.
A value of the angular momentum quantum number can
indicate either an s, p, d, or f subshell which vary in shape.

Answer 31

Angular Momentum Quantum Number (l)

Question 32

Defines the orientation of the orbital in space.
An orbital with l = 1 can have one of three ml values,

-1, 0,
or +1; that is, there are three possible orbitals with l = 1,
each with its own orientation.

Answer 32

Magnetic Quantum Number(ml)