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UNIT 4- CHEMISTRY Elements and Periodic Table Flashcards | StudBud
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UNIT 4- CHEMISTRY Elements and Periodic Table
UNIT 4- CHEMISTRY Elements and Periodic Table
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#periodictable #atomicstructure #isotopes #metalsnonmetalsmetalloids
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Answers
1
What number is always increasing on the modern day periodic table?
number of electrons in outermost shell
number of isotopes
atomic number
the amount of metals
2
If Carbon has atomic number of 6, how many neutrons does the isotope Carbon-12 have?
12
24
6
18
3
which element in period 4 would have chemical properties similar to Oxygen?
Sulfur
Phosphorus
Selenium
Nitrogen
4
Based on the figure above, what does the number 83.80 tell about each krypton atom?
weighted average mass of the isotopes of an element
average number of neutrons in the isotopes of an element
number of neutrons and protons in one isotope of an element
number of neutrons in one isotope of an element
5
Which Scientist's contribution to atomic theory is depicted
Thomson
Dalton
Rutherford
Bohr
6
Elements that are in the same group have similar...
melting points
electron shells
energy levels
properties
7
Which atom has 47 protons in its nucleus?
Potassium
Silver
Titanium
Strontium
8
How many protons does this element have?
101
258
157
95
9
Who's contribution to Atomic Theory is depicted
Democritus
Dalton
Rutherford
Thomson
10
What is the atomic number of the atom pictured?
3
9
6
1
11
In the modern periodic table, the elements are in order by _______________
number of neutrons
atomic mass
atomic number
alphabetical
12
Of the following, the group that contains elements that are most reactive are
carbon family
alkali metals
noble gases
transition metals
13
What is the mass number of the atom that is pictured
1
9
3
6
14
which element has 2 more protons that Nickel?
Platinum
Palladium
Iron
Zinc
15
The atomic number of an element is determined by the number of
neutrons
protons
isotopes
nuclei
16
If an atom has 35 protons in its nucleus how many electrons will it have orbiting the nucleus?
34
1
35
8
17
The illustration shows an experiment performed by which scientist?
Crookes
Thomson
Rutherford
Dalton
18
Who is credited with discovering the first version of the periodic table.
John Dalton
Dimitri Mendeleev
Niels Bohr
Thomas Rutherford
19
which elements are noble gases?
Beryllium and Calcium
Neon and Argon
Flourine and Chlorine
Oxygen and Sulfur
20
The periodic table is arranged in rows called
family
groups
columns
periods
21
Two isotopes of an element have the same number of protons but different _____________
electron shells
neutrons
elements
electrons
22
Hydrogen has 3 naturally occurring isotopes. Which describes the relationship of these isotopes
same mass, same atomic number
different mass, same atomic number
same mass, different atomic number
different mass, different atomic number
23
Which element has 56 protons?
manganese
Barium
Chromium
Iron
24
How many neutrons are in the nucleus of an atom with atomic number 25?
24
30
25
37
25
The positively charged particles in an atoms nucleus are called ______________
elements
neutrons
protons
electrons
26
What does each row of the periodic table have in common?
same properties
same type of isotopes
same atomic mass
same number of electron shells
27
Isotopes differ in ______________, not atomic number
volume
density
protons
mass
28
The center of at atom is called the ___________
electron
neutron
proton
nucleus
29
On the periodic table, electrons are added going to what position
right
down
up
left
30
What element is pictured?
Calcium
Flourine
Neon
Sodium
31
Which family of elements on the periodic table contain the most reactive metals?
halogens (group 17)
lanthanides
transition metals
noble gases (group 18)
32
Elements in a column form a ____________on the periodic table.
period
group
friend
property
33
An elements mass number is the mass of ....
protons + electrons
neutrons + protons
atoms + neutrons
electrons + nucleus
34
How many neutrons does this element have?
258
101
95
157
35
An electron's movement is related to its ________________
electrons
charge
energy level
element
36
Atoms with the same number of protons and different number of neutrons are called....
alkali earth metals
metalloid
isotope
elements
37
How many neutrons does this element have?
42
75
107
33
38
The flame test helped to prove who's contribution to atomic theory?
Bohr
Thomson
Dalton
Rutherford
39
What part or parts of an atom accounts for most of its mass?
protons only
electrons only
protons and neutrons
electrons and neutrons
40
What is the smallest particle that can still be considered an element
atom
proton
molecule
electron
