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Ch 4 The Atom Questions and Answers 100% Solved

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Exam of 11 pages for the course Atom at Atom (Ch 4 The Atom)

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  • October 25, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Atom
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julianah420
Ch 4 The Atom

Matter is anything that has ____ and takes up ____. - answer shape or form; space

The primary distinction between mass and energy is that mass, however small can be
_____ when it is in a gravity field - answer weighed

A(n) _____ is a substance that cannot be broken down into any simpler substance by
ordinary means. - answer element

An ______ is the smallest single unit of an element that retains its chemical behaviors. -
answer atom

A ______ describes a substance in which atoms of different elements are chemically
bound together. - answer compound

A _______ describes the combination of two or more substances in such a way that
they are not chemically bound together. - answer mixture

A _________ is formed any time two or more atoms are chemically bound together. -
answer molecule

It is possible to have a molecule of a compound and also a molecule of an ________. -
answer element

Barium Sulfate suspension is a __________ - answer mixture

Barium Sulfate is a ____________ - answer compound

Barium is an ____________ - answer element

From the formula, CaWO4, how many atoms make up one molecule?

How many elements are there in this compound? - answer6; 3

The ________ number, or ______ number, indicates the number of positive charges
within the central nucleus. - answer atomic; Z

Electrons can actually be located anywhere within their _____ at any time. - answer
orbitals

, Our model of the atom using "shells" or "orbits" for the electrons helps us remember that
the electrons within an atom can only exist at certain, set _________ levels. - answer
energy

The volume of an atom mostly consists of _________________ - answer space

Objects seem solid because of the electrical _____________ between the "outer shells"
of their atoms. - answer repulsion

Each proton in an atom's nucleus is nearly _________ times the physical size and
weight of a single electron - answer2000

An electron has a mass of about 1/2000th amu, which stands for ______________
___________ ______________. - answer atomic mass unit

In the periodic table of elements developed by Mendeleev, each row or period repeats
the cycle of _________________ - answer properties

A neutron could be created by "smashing together" a ______ plus an _________ -
answerproton; electron

The emission of high-speed electrons from unstable neutrons in an atom's nucleus is
called ________ radiation, and is one of the forms of natural radioactivity. - answer beta

The maximum number of electrons which can occupy a shell number under any
conditions is equal to ________, where "N" is the shell number - answer2N^2

The outermost shell of the atom can never hold more than _____electrons, This
"_______ rule" overrides rule #1 - answer8 ; octet

The electron shell number is referred to by physicists as the _________ number -
answer principle quantum

The chemical behavior of an atom is determined only by the number and configuration
of electrons in the _______ shell - answer outermost

Neutral atoms with exactly 8 electrons in the outermost shell have no tendency at all to
connect with other atoms. They are said to be chemically ___________. - answer inert

To increase the Z number from any inert element to the next "larger" atom, a new
electron ______ must be started, and this is reflected on the periodic chart by starting a
new _________ - answer shell ; period

It is the __________ rule that accounts for the periodic or repeating layout of the chart
of the elements - answer octet

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