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Atoms and the Periodic Table
Atoms and the Periodic Table
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atoms and the periodic table
Flashcards
13 cards
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Practice quiz
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Questions
13
Answers
1
The positive spheres are called
cloud
electrons
neutrons
protons
2
The electrons are located
in the rings
in the nucleus
in the cloud
3
How does atomic radius change as you move left to right.
increase
decrease
stay the same
4
How many neutrons does potassium (K) have? at number 19, atomic mass 39
39-19=20
19
39
none
5
Which of these is the correct Lewis dot. model? Aluminum has an atomic number of 13.
D
A
C
B
6
How does atomic mass change as you move left to right.
increase
stay the same
decrease
7
The empty spheres are called
protons
neutrons
electrons
cloud
8
With 1 outer shell electron which periodic group (column) is this in
Group 17, halogens
somewhere in the middle
Last (group 18) noble gasses
First (group 1) alkali metals
9
Which model of the atom is shown
Daltons
Bohr
Modern (Cloud model)
10
How does reactivity change as you move down a group (column)?
increase
decrease
stay the same
11
How many protons does Manganese have? atomic number 25, atomic mass 55
25
55-25=30
none
55
12
In the modern model the electrons are found in the
rings
cloud
nucleus
13
This is a group 1 element. Which one is it?
Hydrogen
Lithium
sodium
potassium
