C.6A History of Atomic Theory
What is the charge of an electron?
A) Negative
B) Positive
C) No Charge
D) Super-Negative
What is A) Negative
What ion is found on the nucleus of the atom?
A) Electron
B) Neutron
C) Proton
D) Megatron
What is the C) Proton
Which type of electromagnetic waves have the greatest energy?
A) Gamma rays
B) Microwaves
C) Radio waves
D) Visible light
What is A) Gamma Rays
The location of non-metals on the periodic table.
A) Right of the staircase
B) Boarding the staircase
C) Left of the staircase
D) The center of the periodic table
What is A) Right of the staircase
What is the trend for atomic radius moving across a period?
A) Stays the same
B) Increases
C) Decreases
D) No trend
What is C) Decreases
According to Dalton's Atomic theory, all elements are made of atoms that are:
A) Empty Space
B) Divided into 3-sub particles
C) Indivisible
D) Positively Charged
What is C) Indivisible
Where are the electrons found?
A) Electron Orbital
B) Electron Cloud
C) Necleus
D) Valence Shell
What is the B) Electron Cloud
Which color in the visible light spectrum carries the least energy?
A) Blue
B) Red
C) Yellow
D) Violet
What is B) Red
Periodic table families are found in:
A) Periods
B) Sections
C) Lines
D) Groups
What is D) Groups
When an atom gains electrons, do they get larger or smaller?
A) Larger
B) Smaller
What is A) Larger
In 1897, J.J. Thomson used a device to discover the electron. What was the instrument used?
A) Gold-Foil Experiment
B) Oil-Drop Experiment
C) Emission Spectra
D) Cathode Ray Tube
What is D) Cathode Ray Tube
Definition of average atomic mass:
A) The sum of the average electron and neutron mass of all an atoms naturally occurring isotopes, measured in atomic mass units
B) The weighted average mass of all its naturally occurring isotopes, measured in atomic mass units
C) The sum of the neutron and electron
D) The sum of the proton and neutron
What is B) The weighted average mass of all its naturally occurring isotopes, measured in atomic mass units
Describe the relationship between frequency and wavelength?
A) Indirectly Proportional
B) No relationship
C) Directly Proportional
D) Linear
What is A) Indirectly Proportional
Which groups of elements forms ions with various charges?
A) Noble Gases
B) Transition Metals
C)Halogens
D) Alkali Metals
What is B) Transition Metals
Which of the elements listed below has the highest ionization energy?
A) Calcium
B) Aluminum
C) Bromine
D) Fluorine
What is D) Fluorine
In 1911, Ernest Rutherford shot a beam of alpha particles at a piece of thin gold foil what was his conclusion?
A) Positively and negatively charged particles move freely within the atom.
B) Positively charged particles exist in a small, centralized nucleus.
C) Protons, neutrons, and electrons are small, invisible particles.
D)Electrons and protons are organized into levels called orbitals.
What is B) Positively charged particles exist in a small, centralized nucleus.
An atom of a certain element has 78 protons, 78 electrons and a mass number of 198.
How many neutrons does this element have? What is the name of this element?
A) 78 Neutrons, Plutonium
B) 120 Neutrons, Platinum
C) 198 Neutrons, Platinum
D) 120 Neutrons, Helium
What is B) 120 Neutrons, Platinum
What does it mean when an element is in ground state?
A) They are found in the ground
B) There are more electrons and has a negative charge
C) They have no charge, the same number of protons and electrons
D) There are more protons and has a positive charge
What is C) They have no charge, the same number of protons and electrons
An element has the following properties:
To which group on the Periodic Table does this element belong?
A.Halogens
B.Noble gases
C.Alkali metals
D.Alkaline earth metals
What is B.Noble gases
What causes the atomic radius of the elements to decrease across Period 3 from left to right?
A.The shielding effect
B.The decreasing metallic character
C.The increasing nuclear charge
D.The increasing number of neutrons
What is C.The increasing nuclear charge
"The location and velocity of electrons cannot be known at the same time."
Which scientist discovered this?
A) John Dalton
B) William Heisenberg
C) J.J Thomson
D) Ernest Rutherford
What is B) William Heisenberg
An atom of an unknown element forms an ion with a +1 charge and has 4 electrons. (after losing an electron)
What is the name of this element?
A) Beryllium (Be)
B) Carbon (C)
C) Boron (B)
D) Lithium (Li)
What is C) Boron
What is an accurate description of a Lewis Dot Structure?
A) The lewis dot structure represents the Principal Energy Levels of an element
B) The lewis dot structure shows the amount of electrons found in the atom
C) The lewis dot structure represents the valence electrons of an atom
D) The lewis dot structure represents the amount of electrons found in the nucleus
What is C) The lewis dot structure represents the valence electrons of an atom
An unknown element was recently discovered and found to have the characteristics shown in the table.
Characteristics of ?
In which group does the unknown element most likely belong?
A.Alkali Metals
B.Alkaline Earth Metals
C.Halogens
D.Transition Metals
What is C.Halogens
Which of the following elements has the highest force of attraction?
A) Potassium
B) Sulfur
C) Iodine
D) Oxygen
What is D) Oxygen