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Chapter 16 Properties of Atoms and the Periodic Table Flashcards | StudBud
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Chapter 16 Properties of Atoms and the Periodic Table
Chapter 16 Properties of Atoms and the Periodic Table
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9th grade chemical science beginning atomic theory review
Flashcards
32 cards
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Questions
32
Answers
1
When an atom has this number of electrons in the valence level, it is stable
6
4
3
8
2
Elements in group 14 of the periodic table have how many valence electrons
4
6
8
2
3
How many electrons can 1st energy (electron) level hold?
6
4
2
8
4
The particle of an atom with a negative charge
neutron
proton
isotope
electron
5
This is the current model of the atom
solid sphere model
quark model
atomic theory model
electron cloud model
6
These elements are ductile, malleable, conductive and have a shiny luster.
halogens
metals
nonmetals
metalloids
7
What increases as you go across a period in the periodic table
ductility
conductivity
malleability
atomic number
8
The same element with a different number of neutrons
isotope
malleable
quark
ion
9
Elements that lie on the stairstep of the periodic table, except for aluminum
isotopes
metals
metalloids
nonmetals
10
An electron dot diagram shows how many electrons an element has
in the periodic table
in the nucleus
in the electron cloud
in the outermost energy level
11
The sum of the protons and neutrons is the ________________.
periodic number
atomic mass unit
atomic number
mass number
12
In an particular atom, the number of this particle in never, ever changes.
neutrons
electrons
protons
quarks
13
Vertical columns in the periodic table are called
groups
valence levels
periods
rows
14
What part of the atom contains most of its mass?
valence electrons
nucleus
quarks
electron cloud
15
The electrons in the outermost energy level are called ___________ electrons.
valence
valet
electronic
atomic
16
In the periodic table image of Bromine shown, Br is the _________ __________.
chemical symbol
atomic number
element name
atomic weight
17
According to the image, what is the average atomic mass of Francium?
87
223.020
223
136
18
The elements of the periodic table are arranged according to
year of discovery
properties
malleability
random chance
19
Chemical symbols surrounded by dots representing valence electrons are these
periodic tables
halogens
electron dot diagrams
atomic mass number
20
This part of the atom has very little mass but most of the atom's volume
nucleus
electron cloud
atomic theory
quarks
21
Lithium, atomic number 3, has an average atomic mass of 6.941. How many neutrons?
6
2
8
4
22
Which particle of the atom has no charge?
quarks
neutrons
electrons
protons
23
The elements to the left of the stairstep on the periodic table
metals
isotopes
metalloids
nonmetals
24
The mass of a proton is approximately the same as a ______________.
quark
electron
photon
neutron
25
The mass of a proton is equal to one AMU. AMU stands for
Annual Mass Unit
Average Mass unit
Awesome Mass Unit
Atomic Mass Unit
26
The elements to the right of the stairstep on the periodic table
metals
metalloids
isotopes
nonmetals
27
There are six of these small particles known to scientists
neutrons
protons
quarks
electrons
28
Who created the first periodic table of the elements?
John Dalton
Dmitri Mendeleev
Copernicus
Aristotle
29
Carbon-13 has how many neutrons?
10
7
8
9
30
What particles in the atom are positively charged?
photons
neutrons
protons
electrons
31
What is not found in the nucleus of an atom?
quark
neutron
proton
electron
32
What are the rows of the periodic table called?
families
columns
periods
groups
