The smallest form of matter or an element that cannot be chemically broken down any further.
What is an atom?
100
This is the name of the objects located on the different levels of an atom.
What is electrons?
100
A substance that contains only the same kind of atoms and cannot be broken down any further.
What is an element?
100
This is the name for the listing of elements arranged in order of increasing atomic numbers.
What is the periodic table?
100
This is the name given for the number of protons in each element as well as deciding the placement of each element on the periodic table.
What is the atomic number?
200
This is the name of the positive charge of an atom.
What is a proton?
200
This is the location of the levels of an atom in relation to the nucleus of an atom.
What is on the outside or around the nucleus?
200
This is the name of the first element listed on the periodic table.
What is hydrogen?
200
This is the name for the vertical column listing of the elements in the periodic table.
What is the group?
200
This is the name for the number listed at the bottom of each element listed on the periodic table.
What is the atomic mass?
300
This is the part of an atom that does not have a charge.
What is a neutron?
300
This is the number of electrons allowed on the first level K of an atom.
What is two?
300
An element's number is determined by the number of these particles in its nucleus.
What is the number of protons?
300
This is the name for the horizontal listing or rows of all the elements in the periodic table.
What is period?
300
This is how the number of protons compares to the number of electrons in each atom.
What is they are the same?
400
This is the negative charge of an atom.
What is an electron?
400
This is the number of electrons allowed on the second level L of an atom.
What is eight?
400
This is the total you get when you add the charges of the protons and electrons together for any element.
What is zero?
400
This is the name given to the gases in group 18 that are odorless, colorless, have the same properties, and do not combine very easily with any other element.
What are the noble gases?
400
This element has the atomic number 80 and is a metal that is liquid at room temperature.
What is mercury?
500
This is the location of the protons and neutrons in an atom.
What is the nucleus?
500
This is the specific name given to the outermost level or shell of any atom.
What is the valence shell?
500
This is what the majority of elements are on the periodic table. (Hint: The answer is not a solid.)
What is metals?
500
This person is given sole credit for the develpment of the periodic table in 1869.
Who was Dmitri Mendeleev?
500
This is the name for the elements listed at the bottom of the periodic table and have names like americium and einsteinium.
What are synthetic elements, which they have been made and are not found in nature?