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Periodic Table of Elements Flashcards | StudBud
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Periodic Table of Elements
Periodic Table of Elements
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#chemistry #elements
Flashcards
26 cards
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Questions
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Answers
1
Protons have a _____ charge.
none of these
neutral
negative
positive
2
What does AMU stand for?
AMU
protons
Atomic Number
Atomic Mass Unit
3
_________ is the number protons an element has.
atom
atomic mass
atomic symbol
atomic number
4
What is the charge of a neutron?
-
+
0
none of these
5
Where do you find the Atomic number?
bottom
top left
top right
middle left
6
Periods tell you the number of ___ an element has
protons
shells
valence electrons
electrons
7
How much does a neutron weigh?
3 AMU
1 AMU
3 grams
1 gram
8
Fe is the atomic symbol for _____.
potassium
fluorine
oxygen
iron
9
Where are the electrons located?
In the nucleus
outer shells
In your stomach
In a proton
10
An atom of the same element that have a different number of neutrons is a(n)
period
isotope
element
atom
11
What do Lewis Dot Structures show?
Bonds between electrons and protons
Bonds between atoms and electrons
none of these
Bonds between protons and neutrons
12
What’s the center of an atom?
nucleus
electrons
atoms
atomic mass
13
What the difference between periods and groups?
Periods go horizontal, groups go vertical
Periods are smaller than groups
Periods go vertical, groups go horizontal
Period is a dot, group is a line
14
The periodic table is made up of mostly
semimetals
transition metals
noble gases
nonmetals
15
What 3 parts make the atom?
Neutron, proton, electron
Element, electrons, neutrons
Element, protons, neutrons
Atomic mass, AMU, neutrons
16
How do you find the number of neutrons in an element?
Atomic Mass - half life
Atomic mass - atomic number
Isotope - electrons
Neutrons - protons
17
What’s the first element on the periodic table?
Hydrogen
Iron
Oxygen
Chlorine
18
The atomic symbol for sodium is
So
Na
Ne
Sa
19
In an atomic symbol, the first letter is always
C
uppercase
lowercase
D
20
The time it takes for the radioactivity of an isotope to decay to half of its original amount
energy levels
carbon 14
Radioactivity
Half Life
21
What are the properties of a Valence Electron?
Determines elements' properties
In the outermost shell
Has the highest energy
all of these
22
How is the Periodic Table of Elements arranged?
number electrons
color
number atoms
atomic number
23
What does each dot represent in the Lewis Dot Structure?
1 RNA
1 H2O
1 atom
1 valence electron
24
What is the smallest particle of an element?
neutron
electron
atom
proton
25
Elements on the far right of the periodic chart are not very reactive. They are known as
noble gases
molecular gases
fair gases
noble men
26
Helium has ___ valence electrons.
1
4
3
2
