Type
Crossword
Description

This crossword contains the following questions and answers:

He discovered the neutron Chadwick
Rutherford did an.... Experiment
This part of an atom has a positive charge Proton
The number above the element's name Atomic Mass
The emission of particles caused by disintegration of the nucleus Radioactivity
Elements that have same number of protons but different neutrons Isotope
Dalton came up with the... Atomic Theory
He did the gold foil experiment Rutherford
Most radioactive particle Gamma
Least radioactive particle Alpha
This part of an atom has a negative charge Electron
The middle of an atom with protons and neutrons inside Nucleus
He created the modern day periodic table Dalton
Amount of time it takes for an atom to decrease by half Half life
Developed the concept of atoms Democritus
This part of an atom has a neutral charge Neutron
The big number under the element's name atomic number
He discovered the electron thompson
Second most radioactive particle Beta
Bohr created a... model

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Atomic Structure Crossword Puzzle

Type
Crossword
Description

This crossword contains the following questions and answers:

The smallest unit of an element that maintains the properties of that element. Atom
A subatomic particle that has no change and that is found in the nucleus of an atom. neutron
A region around the nucleus of an atom whose electrons are likely to be found. electron cloud
A unit of mass that describes the mass of an atom or molecule. atomic mass unit
An atom's central region, which is made up of protons and neutrons. nucleus
An atom that has the same number of protons/atomic number as other atoms of the same element do but that has a different number of neutrons/atomic mass. isotope
The mass of an atomn expressed in atomic mass units. atomic mass
A subatomic particle that has a positive charge and that is found in the nucleus of an atom. proton
A subatomic particle that has a negative charge. electron
The sum of the number of protons and neutrons in the nucleus of an atom. mass number
The number of protons in the nucleus of an atom; the atom's number is the same for all atoms of an element. atomic number
Plays in radioactive atoms that changes a neutron to a proton or electron. weak force
A type of physical that occurs between electrically charged particles. electromagnetic force
The force that holds particles together in the atomic nucleus. strong force
A force that attracts any objects with mass. gravitational force

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Atomic Structure Word Search

Type
Word Search
Description

This word search contains the following answers:

orbital
energy levels
plum pudding
aristotle
democritus
ion
isotopes
subatomic
nucleus
element
bohr
positive
negative
rutherford
electron cloud
thomson
dalton
atomic mass
electrons
atomic number
neutrons
protons
atoms

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Atomic Theory Crossword

Type
Crossword
Description

This crossword contains the following questions and answers:

Greek Philosoper; atom is indestructible Democritus
Who said atoms are tiny particles with no internal structure Dalton
Discovered the electron Thomson
What was J. J. Thomson's atomic model called Plum pudding
Discovered radioactivity; father of photography Becquerrel
Discovered the nucleus Rutherford
Discovered the neutron Chadwick
Said atom has a small positively charged nucleus, electrons travel in a circular orbit around the nucleus Bohr
Father of Chemistry Lavoisier
Model that describes the electronic structure of the atom as the probablity of finding electrons within certain regions of space Electron Cloud
Work lead to the electron cloud model by stating electrons move in a wave-like pattern schrodinger
Stated that you can only know the velocity or the position of an electron at one time, but not both Heisenburg

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Atom Crossword Puzzle

Type
Crossword
Description

This crossword contains the following questions and answers:

____________ was the first man to think of the atom Democritus
An atom is made up of mostly _____________ Empty Space
Protons have a ____________ charge Positive
Neutrons have ___________charge No
Electrons have a _____________ charge Negative
The nucleus of an atom is incredibly ___________ Dense
An atomic bomb goes off when you _________atoms Split
Protons, neutrons, and electrons are made up of _________ Quarks
Protons and neutrons make up the __________ of an atom Nucleus
The number of protons and electrons are ____________ Equal
_____________ was the first person to create a model of the atom John Dalton
Electrons are found on the __________ of the atom Outside
Everything is made from ___________, including elements atoms
On the Periodic Table the number above the letters tell you how many ______________ are in an atom of that element Protons
It took us 2000 years to prove Democritus right because we didn't have the ___________ to prove him right technology

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Atomic Structure Word Search

Type
Word Search
Description

This word search contains the following answers:

Negative
Element
Erwin
Chadwick
Neutrons
Atomic mass
Electron cloud
Positive
Nucleus
Ion
Plum pudding
Atoms
Atomic number
Dalton
Rutherford
Bohr
Subatomic
Democritus
Energy levels
Protons
Electrons
Thomson
Isotopes
Aristotle
Orbital

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8th Grade Science Crossword

Type
Crossword
Description

This crossword contains the following questions and answers:

Number of protons in the nucleus of an atom atomic number
A stable subatomic particle electron
A cloudlike group of electrons electroncloud
A substance consisting of atoms which all have the same number of protons element
The time required for a quantity to reduce to half its initial value halflife
Any one of various forms in which the atoms of a chemical element can occur isotope
The total number of protons and neutrons in a nucleus massnumber
A subatomic particle of about the same mass as a proton but without an electric charge neutron
A very small particle of matter that is part of the nucleus of an atom and that has a positive electrical charge Proton
A solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity metal
An element or substance that is not a metal nonmetal
A nonmetal that can combine with a metal to form an alloy metalloid
The smallest particle of a substance that can exist by itself or be combined with other atoms to form a molecule atom

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Atoms and elements Cross word

Type
Crossword
Description

This crossword contains the following questions and answers:

The negatively charged particle in the electron cloud. Electron
A particle in the nucleus that is positively charged Proton
A particle in the nucleus with a neutral, or no charge Neutron
A tiny, dense positively charged region in the center of an Atom Nucleus
Particles, like protons, neutrons, and electrons that are smaller than atoms Subatomic particles
Regions inside the Atom where electrons are likely to be found. This model developed by Schrodinger, is called Quantum Theory Electron Cloud
The number of protons in an element Atomic Number
The average of the masses the neutrally occurring isotopes in element Atomic mass
The arrangement of elements on a table based on their atomic number Periodic table
A column on the periodic table, also called a family containing elements with the same number of Valence electrons Chemical group
one of a hundred or so pure substances that cannot be broken down into simpler substances Element

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Atomic Structure and the Periodic Table Crossword

Type
Crossword
Description

This crossword contains the following questions and answers:

The "outer energy shell" of and atom valence
Electrons are "shared" in this type of bond. covalent
Electrons are "stolen" in this type of bond. Ionic
The smallest unit of matter with all the properties of that substance. atom
This matches the number of protons in an atom. atomicnumber
A neutron has a ___________________ charge. neutral
"Like" electric charges ____________________ each other. repel
A combination of one or more atoms. molecule
The location around the nucleus where electrons orbit. electroncloud
A charged particle. ion
A "Family" of elements that do not typically react with other elements. Noblegases
The "Family" of elements that are very reactive. halogens
Characteristics that are measurable or observable are called physical _____________. properties
Subtract the atomic number from the atomic mass to find the number of _________________. neutrons
Electrons have a ______________________ charge. negative
Protons have a _________________________ charge. positive
An abreviated way to name an element. Chemicalsymbol
Other than hydrogen and helium, the number of electrons needed to fill the valence shell. eight
The center of an atom where the protons and neutrons are located. nucleus
An element that can have a variable number of neutrons in its nucleus. isotope
Atoms with full outer energy shells are known to be _______________. stable
A group of elements with similar properties are known as a _________________. family
Reactivity is a ______________________ property. chemical
The elements are organized into this grid. periodictable
When elements react they form new _____________________. substances
This element is found in all organic matter and has four valence electrons. carbon
NaCl is the ___________________________ for salt. chemicalformula
Each ___________________ on the periodic table represents the number of valence electrons in an element. column
Each __________ on the Periodic Table represents the number of "energy levels" an element has. row
The "electronic connections" between elements in a molecule. bonds

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THE HISTORY OF THE ATOM Crossword

Type
Crossword
Description

This crossword contains the following questions and answers:

Henri Bacqueral discovered the __________ of atoms' magnetism and radioactivity matter
Aristotle thought there was not a smallest part of ______ . elements
The ____ is the amount of matter in an object. mass
_____________ is a change in the velocity of an object, mass, or body. Acceleration
A ________ is an element or compound. chemical
Marie and Pierre Curie worked with mysteries of _________ and radioactivity. chemistry
An ____ is the smallest unit of an element. atom
The _______ is in the middle of the atom. nucleus
J.J. Thomas discovered the ______ model. atomic
An _______ is a negatively charged part of an atom. electron
A ______ is a positively charged part of an atom. proton
Ernest Rutherford discovered the _______. nucleus
Robert Millikan was interested in J.J. Thomas and his _________. electrons
A _____ is the energy level where the electrons are found. shell
___________ is the spontaneous disintegration of the nucleus. Radioactivity
An _______ is a pure substance that cannot be broken down into simpler substances by chemical reactions. element
Neils Bohr changed the _____of electrons. orbit
A ________ is a material formed by joining elements. compound
An ___ is an electrically charge particle (positive or negative). ion
Antonie Lavoiser put the first table of ________ together. elements

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Matter and Atoms Crossword

Type
Crossword
Description

This crossword contains the following questions and answers:

Everything/anything that takes up space matter
Can’t be broken down any longer (an atom) element
people who need to take notes homeslices
First person to think of the atom Democritus
He performed experiments with various chemicals that showed that matter seemed to consist of elementary lumpy particles (atoms) Dalton
In 1897, the English physicist discovered the electron and proposed a model for the structure of the atom. he knew that electrons had a negative charge and thought that matter must have a positive charge Thompson
In 1911 he thought it would be interesting to bombard atoms with these alpha rays, figuring that this experiment could investigate the inside of the atom. rutherford
came up with a theory that said the electrons do not spiral into the nucleus and came up with some rules for what does happen. bohr
the whole number on the periodic table atomic number
decimal on the periodic table atomic weight
the negative charge of an atom electron
the neutral part of an atom neutron
the positive part of the atom proton
the chart where all of the elements are periodic table
J.J. Thompson's atom model's name Plum Pudding
The people who are going to get an A for this Sophie and Olga

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