WorksheetsAtoms and the Periodic Table Review
Total questions: 39
Worksheet time: 21mins
Which atomic particle has a negative electric charge?
Electron
Proton
Neutron
Positron
Determine the mass number and atomic number of a chlorine atom that has 17 protons and 18 neutrons.
Mass number: 35, Atomic number: 17
Mass number: 36, Atomic number: 17
Mass number: 34, Atomic number: 16
Mass number: 35, Atomic number: 18
Elements are organized in the periodic table by increasing atomic ______.
Number
Mass
Weight
Size
If the atomic number of an element is 5 and the mass number is 10, how do you determine the number of neutrons?
Subtract the atomic number from the mass number: 5
Add the atomic number to the mass number: 15
Multiply the atomic number by the mass number: 50
Divide the mass number by the atomic number: 2
What particles are found in the nucleus of an atom?
Protons and neutrons
Electrons and protons
Neutrons and electrons
Protons and electrons
What elements are represented by the following symbols? Au-____, Hg-____, and Fe-____.
Gold, Mercury, Iron
Silver, Lead, Copper
Platinum, Tin, Zinc
Aluminum, Nickel, Cobalt
The first periodic table based on atomic mass was devised by ______.
Dmitri Mendeleev
John Dalton
Henry Moseley
J.J. Thomson
Identify the three particles that make up an atom along with their charges. ______ ( ), ______ ( ), and ______ ( ).
Proton (+), Neutron (0), Electron (-)
Photon (0), Neutrino (0), Positron (+)
Quark (+), Gluon (0), Lepton (-)
Meson (+), Baryon (0), Fermion (-)
Each energy level of an atom has a maximum number of ______ it can hold.
Electrons
Protons
Neutrons
Photons
List the chemical symbols for the elements aluminum, zinc, and copper. ___, ____, and ___.
Al, Zn, Cu
Ag, Au, Pt
Fe, Ni, Co
Pb, Sn, Hg
Horizontal rows of the periodic table are called ______.
Periods
Groups
Blocks
Families
How are the elements abbreviated in scientific shorthand?
By their chemical symbols
By their atomic numbers
By their full names
By their molecular weights
The number of ______ identifies the element.
Protons
Neutrons
Electrons
Atoms
If a carbon atom has 7 neutrons and 6 protons, what is its mass number?
13
12
14
11
Atoms of the same element with different numbers of neutrons are called ______.
Isotopes
Ions
Molecules
Compounds
Classify the following elements as a metal, nonmetal, or a metalloid. Carbon-____, Boron-____, Sodium-____.
Nonmetal, Metalloid, Metal
Metal, Nonmetal, Metalloid
Metalloid, Metal, Nonmetal
Nonmetal, Metal, Metalloid
The halogens are located in which groups?
Group 17
Group 1
Group 2
Group 18
Describe three properties of elements that are metals. ______, ______, and ______.
Conductivity, Malleability, Ductility
Brittleness, Insulation, Rigidity
Transparency, Fragility, Elasticity
Inertness, Non-reactivity, Non-conductivity
What is the number in the top corner of an element’s periodic square?
Atomic number
Mass number
Valency
Group number
What do the elements in the same period have in common?
Same number of electron shells
Same number of valence electrons
Same atomic number
Same chemical properties
What atomic particle is NOT found in the nucleus of an atom?
Electron
Proton
Neutron
Moseley corrected the early problems of the periodic table by arranging the elements in order of increasing atomic ____________________.
Number
Mass
Weight
Volume
Vertical columns in the periodic table are called ____________________.
Groups
Periods
Rows
Blocks
Identify the three regions the periodic table is divided into. ______________, ____________, and ____________________.
Metals, nonmetals, metalloids
Solids, liquids, gases
Alkali metals, transition metals, noble gases
Halogens, lanthanides, actinides
Describe what an electron dot diagram represents.
Valence electrons
Atomic mass
Protons in the nucleus
Neutrons in the nucleus
Explain the significance of the noble gases.
Inert and stable due to full valence shell
Highly reactive and unstable
Commonly form compounds with metals
Easily lose electrons to form cations
Which element makes up 90% of the atoms in the universe and is highly reactive?
Hydrogen
Oxygen
Carbon
Helium
Determine the group AND period of the element gold (Au). __________ and __________.
Group 11, Period 6
Group 10, Period 5
Group 12, Period 6
Group 9, Period 4
What is the only metal found in liquid state at room temperature?
Mercury
Gold
Silver
Copper
Elements found in groups 3 through 12 of the periodic table are called the ____________________ elements.
Transition
Alkali
Noble
Halogen
The most reactive metals on the periodic table are located in Group ____.
1
2
17
18
What is the region around the nucleus that is occupied by electrons called?
Electron cloud
Proton field
Neutron zone
Photon belt
Elements that are gases, brittle, and poor conductors are ____________________.
Nonmetals
Metals
Metalloids
Noble gases
Define atom.
Smallest unit of matter
A type of molecule
A large particle
A chemical compound
The maximum number of electrons allowed in the second energy level of an atom is ____.
8
2
10
6
The number of which particle determines the identity of an element?
Protons
Neutrons
Electrons
Photons
Protons and neutrons are made up of smaller particles called ________________.
Quarks
Electrons
Photons
Neutrinos
Can electron positions be pinpointed exactly?
No
Yes, with advanced technology
Only in certain conditions
Yes, using classical physics
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