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Atoms and the Periodic Table
Atoms and the Periodic Table
25 terms
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Atomic theory, subatomic particles, families of elements and atomic structure
Flashcards
25 cards
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Questions
25
Answers
1
The number of protons in the nucleus of every atom of an element is called?
Atomic Number
Atomic Theory
Atomic Mass
Valence
2
The ______ ______ of an element is the average mass of all the isotopes of that element.
Atomic number
Atomic mass
3
The particle of an atom with a positive charge is called?
Quark
Neutron
Electron
Proton
4
The particle of an atom that moves rapidly in the space outside the nucleus is called?
Proton
Nucleus
Neutron
Electron
5
Which element is a metal: Ba or At?
Ba
At
6
Which element has 6 valence electrons: O or B?
B
O
7
How many valence electrons does As have?
5
7
6
4
8
Which element is a noble gas: Ne or Br or O?
Ne
Br
O
9
Which element has an atomic mass of 197?
Mercury
Gold
Platinum
Silver
10
Which element has 18 electrons?
Ne
Ca
Cl
Ar
11
Which element is an alkali metal: Rb or Al?
Al
Rb
12
Which group is N in?
15
2
14
13
13
Which scientist was most successful in creating a periodic table?
Democritus
Dalton
Rutherford
Mendeleev
14
How many neutrons does Bromine have?
40
55
50
45
15
Which element is a halogen: Na or Cl?
Na
Cl
16
The horizontal rows on the peirodic table are known as?
Periods
Groups
17
The very small center of an atom is called?
Nucleus
Electron
Proton
Neutron
18
Elements that have similar properties are grouped in?
Families
Symbols
Groups
Periods
19
What is the total number of electrons in an atom of bromine?
18
80
35
17
20
What are the vertical columns on the periodic table called?
Periods
Groups
21
The particle of an atom is neutral is called?
Proton
Valence
Electron
Neutron
22
This atom has 16 protons in its nucleus
Potassium
Phosphorus
Hydrogen
Sulfur
23
The sum of protons and neutrons in the nucleus of an atom is called?
Proton
Atomic number
Neutron
Atomic Mass
24
Which period is Ca in?
4
2
1
3
25
The electrons on the very last energy level
Proton
Neutron
Valence
Electron
