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Atomic Structure and the Periodic Table Flashcards | StudBud
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Atomic Structure and the Periodic Table
Atomic Structure and the Periodic Table
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Atomic Structure and periodic table review
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
What is the mass of the atom?
14
7
15
6
2
How many valence electrons does Ar have?
8
18
22
40
3
What do protons and electrons have in common?
same charge
same location
same number of each in an atom
same mass
4
What is the charge of potassium's (K) nucleus?
+19
-19
neutral
+39
5
What is the atomic number of Ar?
40
8
22
18
6
How many protons does an atom of aluminum (Al) have?
27
3
40
13
7
The volume of an atom is ...
positive
mostly empty space
found in the nucleus
negative
8
Neils Bohr was known for...
arranging elements on the periodic table
drawing a model of an atom with orbital shells of electrons
his gold foil experiment
9
What is the net charge of an atom?
-5
depends on the atom
0
+1
10
What type of atom is this?
Sulfur
Neon
Nitrogen
Oxygen
11
Which subatomic particle determines reactivity?
protons
valence electrons
neutrons
electrons
12
How many neutrons are in an atom of silicon (Si)?
28
42
14
16
13
Which group(s) are the most reactive on the periodic table?
2 and 16
18
transition metals
1 and 17
14
The electrical charge of an electron is ...
positive
negative
neutral
15
The electron cloud holds...
valence electrons
energy levels
all of these
electrons
16
Which are poor conductors of electricity?
metalloids
metals
nonmetals
17
Why are protons always used to determine the identity of an atom?
determine the amount of energy needed for the atom to split
they are positive
they determine reactivity
they never change unless an atom undergoes radioactive decay
18
Colorless gases with low reactivity describes...
alkaline earth metals
lanthanide group
halogens
noble gases
19
The mass of a proton...
is roughly equal to an electron
is roughly equal to a neutron
is almost 0
20
What instrument did Thompson use to make his discovery about atoms?
X-ray
microscope
cathode ray
gold foil
21
What is the mass number of Ar?
40
8
18
22
22
Which subatomic particles give an atom its mass?
neutrons
protons and electrons
protons and neutrons
electrons and neutrons
23
Metals tend to be ...
very reactive
malleable
ductile
good conductors
24
Which subatomic particles have no effect on the net charge of an atom?
valence electrons
electrons
neutrons
protons
25
A charged atom has been found. How many electrons does it have?
16
10
8
