Up and Atom!
Element Classifications
Periodic Table Information
Periodic Table Organization
Vocab Mix-Up
100
The center of an atom is called this.
What is the nucleus?
100
Metals and nonmetals are separated by this on the periodic table.
What is a zig zag line?
100
This is the atomic number of sodium (Na).
What is 11?
100
Iodine (53) is in this group number.
What is group 17 or 7A?
100
These have properties of both metals and nonmetals.
What are metalloids?
200
A neutron has this charge.
What is neutral?
200
Palladium (46) is classified as this (metal / nonmetal / metalloid).
What is a metal?
200
The average atomic mass of thallium (81) is this.
What is 204.383?
200
Lanthanum (57) is in this period.
What is period 6?
200
This is a type of element that is dull, brittle, and conducts heat and electricity poorly.
What is a nonmetal?
300
These two subatomic particles have about the same mass.
What are protons and neutrons?
300
Arsenic (33) is classified as this (metal / nonmetal / metalloid).
What is a metalloid?
300
The mass number of the most common isotope of uranium (92) is this.
What is 238?
300
Selenium (34) has this many valence electrons.
What are 6 valence electrons?
300
These are the electrons located in the outermost energy level of an atom's electron cloud.
What are valence electrons?
400
The electron cloud, which comprises most of an atom's volume, is made mostly of this.
What is empty space?
400
Cadmium (48) is classified as this (representative element / transition metal / inner transition metal).
What is a transition metal?
400
A neutral atom of xenon (54) has this many electrons.
What are 54 electrons?
400
Helium (2) has this many valence electrons?
What is 2?
400
This is a substance that cannot be separated or broken down into simpler substances by chemical means.
What is an element?
500
An atom with 80 protons, 83 electrons, and 121 neutrons would have an atomic mass of this and a charge of this.
What is a mass of 201 u and a charge of -3?
500
Barium (56) is classified as this (representative element / transition metal / inner transition metal).
What is a representative element?
500
The most common isotope of holmium (67) has this many neutrons.
What is 98 neutrons?
500
Of the following, these elements share the most similar properties: strontium (38), beryllium (4), rubidium (37), and yttrium (39).
What are strontium and beryllium?
500
This is the smallest particle into which an element can be divided and still be the same substance.
What is an atom?
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