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Atoms are composed of three…
subatomic particles
Protons have a ________ charge.
positive
Electrons have a ________ charge.
negative
Protons have a mass of one ___
amu
Elements are identified by the number of _______
protons
Neutrons have a _______ charge.
neutral
The nucleus’s job is to _________ the nucleus.
stabilize
The nucleus’s job is to stabilize the _______.
nucleus
Neutrons have a mass of one ___.
amu
Neutrons have a mass of ___ amu.
one
Neutrons have a mass of one ___.
amu
Electrons are located inside of electron ________.
orbitals
Electrons are located inside of ________ orbitals.
electron
Electrons are located inside of ________ ________.
electron orbitals.
To calcuate the charge of an atom, subtract _________ from _______.
protons, electrons
To calculate the mass of an atom, add _______ and ________.
protons, neutrons
Neutrons are located inside of the _______.
nucleus
An atom is the smallest unit of _________.
everything
Atoms are mostly empty _____.
space
Atoms are mostly _____ space.
empty
Atoms are mostly _____ _____.
empty space
Opposite charges _______, and negative charges _____.
attract, repel
If the number of protons and electrons in an atom are equal, then there is no ______.
charge
Elements are pure __________, made up of one kind of ____.
substances, atom
Carbon can form ____ chemical bonds.
four
Carbon can form for ________ _____.
chemical bonds
Carbon is the ________ _____ of life.
building block
Isotopes are _________ of elements.
variations
The atomic mass found on the Periodic Table is the _______ of all ________.
average, isotopes
To calculate neutrons, subtract _______ from the ____.
protons, mass
Isotopes are formed when a specific element has a different number of ________ than another variation of that element.
neutrons
___ electrons fit in the first valence ring.
two
_____ electrons fit in the second valence ring.
eight
_____ electrons fit in the third valence ring.
eight
When the _________ valence ring is ____, the atom is ______.
outermost, full, stable
To write an isotope, write the ______, _______, and ________.
symbol, protons, neutrons
The _____ rule means that an element is ______ when the third ring has all _____ electrons.
octet, stable, eight
A chemical bond is the force of __________ between atoms.
attraction
A ________ ____ is the force of attraction between atoms.
chemical bond
A chemical bond happens when atoms _____ electrons.
share
A chemical bond makes atoms more ______ by filling the _______ ____.
stable, valence rings
Each row (horizontal) on the periodic table are known as _______.
periods
Each column (vertical) on the periodic table are known as ______.
groups
When two nonmetals bond, they form a(n) ________ bond.
covalent
When a metal and nonmetal bond, they form a(n) _____ bond.
ionic
Compounds are molecules made of ____ ____ ___ ____ __ ____.
more than one kind of atom
Atoms are the smallest unit of ______.
matter
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