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The Periodic Table Flashcards | StudBud
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The Periodic Table
The Periodic Table
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Periodic Table review year 11 #year11 #science #chemistry
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
A Russian chemist who is given credit for first arranging elements in a usable manner
Mendeleev
Dalton
Rutherford
Moseley
2
Which elements have the most similar chemical properties?
K and S
K and Ca
K and Cl
K and Na
3
Explain why elements in a group have similar properties.
Because they are all metals
they have the same number of valence electrons
Because they all have the same number of protons
Because they all have the same number of electron shells
4
Which elements are in the same group/family of the periodic table?
Na and Mg
Na and H
Li and Be
K and Ca
5
How many groups does the periodic table have?
8
7
18
16
6
Most of the elements on the periodic table are
Liquids
Gases
Metals
Non-metals
7
In a modern periodic table, elements are arranged in order of?
number of isotopes
number of neutrons
atomic mass
atomic number
8
How is the periodic table organized?
Periods are vertical and groups are horizontal
Periods and groups are horizontal
Periods are horizontal and groups are vertical
Periods and groups are vertical
9
Which group number on the periodic table are the halogens?
17
15
18
16
10
Elements that have the same number of valence electrons are?
in the same group
in the same period
called transition metals
called nobe gases
11
The most reactive metals are the ?
metalloids
alkali metals
transition metals
alkaline earth metals
12
What happens to the atomic radius as you go left to right across a period?
It decreases or stays the same.
It increases.
It decreases.
It increases then decreases.
13
How many valence electrons does the element Magnesium (12) have?
4
1
2
3
14
Why is Helium's 1st ionization energy so high?
It has a full valence shell so more energy is needed.
It is a noble gas.
It is a non metal.
It is Greek to me!
15
Which elements are in the same period?
N and O
F and Cl
O and S
N and P
