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orbital
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negative
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Atomic Structure Word Search

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

atoms and molecules Word Search

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oxygen atom
water molecule
sodium chloride
electrical charge
neon
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energy level
matter
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hydrogen
bohr model
atomic theory
elements
periodic table
carbon
nobel gases
ion
electron cloud
orbitals
atomic mass
subatomic particle
nucleus
neutron
electron
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Atom Crossword

Type
Crossword
Description

Who first suggested the existence of the atom Democritus
He found that the rays were attracted by positively charged metal plates but repelled by negatively charged ones. Thomson
He did not confirm Thomson's model: used gold foil in experiment. Rutherford
Electrons ---------------- the positively charged nucleus. orbit
His model postulated the existence of energy levels or shells of electrons. Bohr
Believed all matter was made from fire, water, air earth. Aristotle
Sub-atomic particles found in protons and neutrons. quarks
The number of protons and neutrons in an element is -------. equal
These sub particles are positive. protons
The sub particles are negatively charged. electrons
On an atomic model electrons are noted on an electron ----------- cloud
Protons plus neutrons equal ---------- --------- atomic mass
The center of an atom is called the ---------. nucleus
The number of electrons is the same as an atom's -------- ----------- atomic number
To find the number of neutrons in an atom, you ------- the number of protons from the atomic mass number for the element. subtract
Atomic mass is usually a ------ number decimal
Matter -------- ------- be created or destroyed. cannot
Isotopes have the same number of protons but a --------- number of neutrons. different
Only ----- electrons can be in the inner most orbit. two
Each element has its own -------- properties
This microscope can be used to see an atom STM
The ------- -------- shows the organization of all known elements Periodic Table
You find the ---------- atomic mass of isotopes to determine atomic weight o that element average
The symbol for gold is Au
The symbol for hydrogen is ----- H
Calcium has --------- protons. twenty

Atomic Structure Word Search

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protons
neutrons
atomic number
electrons
atomic mass
dalton
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electron cloud
rutherford
negative
positive
bohr
element
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ion
democritus
aristotle
energy levels
orbital

Unit 3: Atomic Theory and Electrons in Atoms Word Search

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saul will pass
atomic number
mass number
solar system
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solid sphere
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isotope
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wavelength
lewis dot structure
valence electrons
ring
shell
electron
neutron
proton
atom
nucleus
electron configuration

Atoms, Elements, and Sub-Atomic Particles Word Search

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Atom
Proton
Neutron
Electron
Nucleus
Democritus
Dalton
Thomson
Rutherford
Bohr
Heisenburg
Plum-Pudding Model
Bohr Model
Octet Rule

atoms Crossword

Type
Crossword
Description

the smallest component of an element atom
Dense, positively charged mass at the center of an atom. nucleus
Positively charged subatomic particle found in the nucleus. proton
Neutral subatomic particle found in the nucleus. neutron
Negatively charged subatomic particle found outside the nucleus. electron
The sum of the protons and neutrons in the nucleus of an atom. mass number
This number identifies the element and is equal to the number of protons found in the nucleus. atomic number
An atom with a charge (unequal number of protons and electrons) ion
Versions of the same element with different numbers of neutrons. isotopes
The possible energies that an electron in an atom can have. energy levels
The weighted average mass of all of an element's isotopes' mass numbers (usually a decimal). atomic weight
A visual model showing the most likely locations for the electrons in an atom. electron cloud
The arrangement of electrons around the nucleus of an atom. electron configuration
When all of the electrons in an atom have their lowest possible energies. ground state
the property of a body that causes it to have weight mass
the property of something that is great in magnitude volume
a stable particle with positive charge proton
an elementary particle with negative charge electron
of or relating to constituents of the atom or forces within the atom subatomic
(nontechnical usage) a tiny piece of anything particle

THE HISTORY OF THE ATOM Crossword

Type
Crossword
Description

Create the word atomos Greeks
Comes from “atomos” – “not able to be divided” Democritus
Opposed Democritus idea Aristotle
Atoms combine with other atoms to form new substances. Dalton
Designed The “Gold Foil” experiment. Rutherford
Create the Plum Pudding model. There are small particles inside the atom. Thomson
He said that electrons could only occupy specific energy levels as they orbit the nucleus. Bohr
Basic units of matter. Atom
Circulating in orbits or energy levels. Electron
Positively charged. Protons
Do not have charge. Neutrons

Atomic Structure Crossword Puzzle

Type
Crossword
Description

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

Atomic Theory Crossword

Type
Crossword
Description

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