Periodic Table 1
Periodic Table 2
Periodic Table 3
Periodic Table 4
Periodic Table 5
Periodic Table 6
100
Elements that are classified as a semimetal (metalloid).
What is
100
Each time you go down a period, an elements gains a what
Electron shell
100
On a periodic table, what do periods represent
How many shells an atom has.
100
An atom’s mass number is 210 and its atomic number is 85. How many neutrons does the atom have?
125
100
How many valence electrons does Phosphorus (P) have?
5
100
What is the atomic mass of this element?
22.99
200
The group and period of Lithium
Group 1 Period 2
200
Atomic mass is made up by the number of _______ and ________ .
protons and neutrons
200
The number 11 on Na represents
What is atomic number (protons)
200
Why would you expect to find Neon in its pure, uncombined form on nature?
It is a noble gas / It has a full valence shell
200
The largest of the 3 main groups is the
metals
200
Electrons have this charge
negative
300
Atomic mass of Magnesium
What is 24.3?
300
Family that Xenon belongs to
What is noble gas
300
Why do elements in a group have similar chemical properties?
They have the same number of valence electrons.
300
What did Niels Bohr contribute to our understanding fo the atom?
Electrons are in electron energy levels
300
What did Marie Curie and JJ Thomson contribute to our understanding of the atom
Atom has particles called electrons.
300
Protons have this charge
Positive
400
Cl, S, and I would be classified as
What is nonmetals?
400
How many electrons does Oxygen have
What is 8
400
How are elements K and Br similar
Same number of energy levels
400
Give two common characteristics of a metal.
shiny, good conductor, malleable, ductile
400
What is the most important use of metalloids?
As semiconductors used in electronics
400
What does the Atomic Number represent?
The number of Electrons and Protons located in a specific element.
500
Similar Chemical Properties determine which _______ an element is located in.
Group
500
How many valence electrons does an atom have that is is group 2 period 6
What is 2
500
Which group has members like Li, Rb, K, and Fr?
Alkali Metals
500
What did Ernest Rutherford contribute to our understanding of the atom
Atom has a dense nucleus surrounded by empty space.
500
Which of the subatomic particles make up most of the volume of an atom?
electrons
500
What element has the strongest electronegativity
What is F