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Calderglen High School
1.
How are elements arranged
in the Periodic Table?
answer
Elements are arranged in
terms of their chemical
properties
Calderglen High School
2.
What is similar about elements
in the same group (column) of
the periodic table?
answer
Elements in the same
group show similar
chemical properties
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3.
What are the NOBLE GASES?
answer
The very unreactive
Group 0 elements.
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4.
What is the name given
to the centre of an atom?
answer
The NUCLEUS
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5.
Describe the structure of
an atom?
answer
An atom is a very small particle
with a positively charged centre
(nucleus) surrounded by moving
negatively charged electrons
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6.
What is a nucleus?
answer
The very small positively
charged centre of atom.
It contains protons and neutrons.
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7.
What charge has the centre of
an atom?
answer
Positive charge
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8.
Where are the electrons found
in an atom?
answer
Outside the nucleus
(in energy levels)
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9.
What is ATOMIC NUMBER?
answer
The number of protons in an atom.
It is the number by which elements are
arranged in the Periodic Table
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10.
Why are atoms electrically
neutral?
answer
The number of positively charged
protons equals the number of
negatively charged electrons
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11.
What information does the
group number give?
answer
The group number
=
the number of electrons
in the outer energy level
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12.
What is the mass and charge of
a proton?
answer
Proton
Mass Charge
1 amu
+
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13.
What is the mass and charge
of a electron?
answer
Mass
Charge
Electron almost 0
-
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14.
What is the mass and charge of
a neutron?
answer
Mass Charge
Neutron 1 amu
0
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15.
What is the same about the electron
arrangement of atoms in the same group?
answer
They have the same number of
electrons in their outer energy levels.
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16.
What is the connection between the electron
arrangement and the chemical properties of
an element?
answer
Elements with the same number
of outer electrons have similar
chemical properties
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17.
What is the MASS NUMBER of an atom?
answer
No of Protons
+
No of Neutrons
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18.
What is an ION?
answer
A charged particle formed
when electrons are gained
or lost by an atom
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19.
How is a positive ion
formed?
answer
An atom loses an
outer electron(s)
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20.
How is a negative
ion formed?
answer
An atom gains an
outer electron(s)
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21.
What is a MOLECULE?
answer
A group of non-metal atoms
joined together by covalent
bonds.
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22.
What is a diatomic?
answer
A molecule containing two atoms.
e.g. H2, HCl.
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23.
Which elements exist as
diatomic molecules?
answer
Hydrogen, Nitrogen, Oxygen,
Fluorine, Chlorine, Bromine,
Iodine.
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