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Duplicate of Atoms and the Periodic Table Flashcards | StudBud
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Duplicate of Atoms and the Periodic Table
Duplicate of Atoms and the Periodic Table
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Middle Schools Science, periodic table, very basic. Also a few atom questions. #atoms #periodictable
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1
Electrons have:
tons of mass
some mass
no real mass
1 amu mass
2
Based on the fact that
Bromine
is
nonmetal
in the
halogen family
, which prediction is not true
poor conductor of electrical current
liquid at room temperature
poor conductor of heat
highly reactive
3
Neutrons have a charge that is:
neutral
negative
explosive
postive
4
The 2 most common alkali metals are
sodium and potassium
iron and silver
copper and zinc
calcium and magnesium
5
The two most common alkali metals are:
copper and zinc
sodium and potassium
iron and silver
helium and neon
6
Which group of elements shares characteristics with both metals and nonmetals?
lanthanides
semi-metals
halogens
salts
7
Electrons are found in the :
nucleus
in pairs
electron cloud
8
What is the Chemical Symbol for Sodium
K
S
P
Na
9
Which scientist on our timeline is responsible for discovering the nucleus
Dalton
Rutherford
Bohr
Thompson
10
The horizontal rows are called:
Families
Rows
Groups
Periods
11
Who discovered how the elements are organized?
Dimitri Mendeleev
Neils Bohr
Stephen Hawking
Albert Einstein
12
The most useful property of semi metals is their
tendency to be unreactive
ability to be pulled into long, thin wires
softness and malleability
varying ability to conduct electric current
13
If Lithium has 3 protons and 4 neutrons, then the
atomic number
is:
1
7
3
4
14
Radioactive isotopes called ________ can be used to detect some medical problems
tracers
beta particles
gamma radiation
alpha particles
15
What information on the periodic table tells you the number of PROTONS an atom has?
the elements atomic mass
the elements atomic number
the elements chemical symbol (Example: Na)
the position of the element in a column
16
Most of the periodic table is:
metals
semi-metals or metalloids
non-metals
gases
17
If beryllium has a mass number of 10, it would have
6 protons and 6 neutrons
4 protons and 6 electrons
4 protons and 6 neutrons
4 protons and 4 neutrons
18
The nucleus contains the
protons only
Protons and neutrons
neutrons only
electrons
19
The most common element in the universe is:
helium
carbon
hydrogen
neon
20
The letters in the middle of the periodic square on the periodic table are called the:
atomic number
number of neutrons
atomic symbol
atomic weight
21
The Noble Gases Group is :
very reactive!
pretty
unreactive
reactive
22
Most metals have all of the following properties EXCEPT:
ductility
malleability
conductivity
liquid at room temp
23
Elements in a vertical column of the periodic table
have the same atomic mass
have similar properties
have similar symbols
are in the same period
24
in 1896 Henri Becquerel discovered
light emitting elements
radioactive decay
the periodic table
how to make alloys
25
All of these are groups of elements on the periodic table,
except:
diatomic atoms
Noble Gases
Alkali Metals
Halogens
26
Which type of radiation is the most dangerous and similar to X-Rays
light rays
alpha particle
beta particle
gamma rays
27
Protons have a charge that is :
negative
neutral
positive
28
Why was Mendeleev's periodic table not complete?
He wanted to trick other scientists.
Some of the elements were not discovered yet.
The table was wrong
He was wrong in organizing the table
29
The decimal number at the bottom of the rectangles on the periodic table are called the:
atomic number
atomic name
atomic mass
atomic symbol
