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Periodic Table Flashcards | StudBud
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Periodic Table
Periodic Table
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Periodic table/atomic theory
Flashcards
20 cards
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Questions
20
Answers
1
Most metals are ductile meaning they can....
rust
burn in water
become magnets
be drawn into wires
2
What is the name is given to the elements in Groups 3 through 12?
nonmetals
halogens
noble gases
transition metals
3
The elements in each _______ of the table have the same number of valence electrons.
group
shell
period
section
4
The two most common alkali metals are....
Ca + Mg
Ti + Al
H + O
Na + K
5
The number of an element is based on...
neutrons
neutrons and electons
protons
protons and neutrons
6
What is the number of electrons the halogens typically gain when the react?
one
three
seven
two
7
Metals that can be pounded into a new shape are said to be >>>>
malleable
reactive
conductive
ductile
8
Over 75% of the elements on the periodic table are classified as .....
liquids
metals
gases
isotopes
9
Where are the valence electrons located?
as close to the nucleus as possible
In the nucleus
farthest from the nucleus
next to the protons
10
The most chemically reactive elements are found in _________ of the periodic table.
group 3
group 13
group 2
group 1
11
What is the least dense of all the elements?
H
Mg
He
Na
12
Which form of nuclear radiation consists of high-energy waves similar to X-rays?
gamma rays
plasma rays
alpha particles
beta particles
13
What is the most abundant element in the universe?
C
Au
H
O
14
Which element is added to drinking water in order to prevent tooth decay?
Ca
Fe
F
Na
15
The modern periodic table is organized according to
Atomic mass
valence electrons
isotopes
atomic number
16
Which have the same number of and arrangement of valence electrons?
groups
transition metals
protons
periods
17
An atom of an element with a different number of neutrons is called.....
ionic bond
quark
isotope
ion
18
Atoms of the halogen family typically gain ____ electron when they react.
two
four
one
three
19
Which scientists inferred that an atoms' positive charge must be clustered in the nucleus?
Niels Bohr
Ernest Rutherford
John Dalton
J.J. Thomson
20
What elements are found in the shaded region of the periodic table?
noble gases
metalloids
halogens
alkali metals
