This is defined as the smallest unit of an element which retains the properties of that element.
What is an atom?
100
This is the person who is given credit for first organizing the known elements into the Periodic Table.
Who is Dmitri Mendeleev?
100
Anything that is too small to be seen with the naked eye but is large enough to be seen with a microscope is called this.
What is microscopic?
100
This is a substance made with more than one kind of atom.
What is a compound?
100
This is the kind of electron typically involved in chemical bonding.
What is valence electrons?
200
Atoms can be broken down into these smaller particles.
What are subatomic particles (protons, neutrons, and electrons)?
200
These are elements which readily give up valence electrons and which are located on the left-hand side of the Periodic Table.
What are metals?
200
In chemistry, we discuss these sizes of particles and how those particles affect what happens in the macroscopic world.
What are microscopic and submicroscopic?
200
This kind of compound is typically made with one kind of metal atom and one kind of nonmetal atom.
What is an ionic compound?
200
This is the number of electrons which can be held by the innermost electron shell in an atom.
What is two?
300
This is a substance made of only one kind of atom.
What is an element?
300
These are columns on the Periodic Table.
What are groups or families?
300
This kind of property can be observed without changing a substance (or group of substances) into another substance (or group of substances).
What is a physical property?
300
This kind of compound is made of more than one kind of nonmetal atom.
What is a covalent compound?
300
The outermost shells of some heavier elements can hold up to 18 or even 32 electrons, but only this many outer electrons in those elements actually participate in bonding.
What is eight?
400
These are tiny, negatively-charged particles which are located in shells around the atomic nucleus.
What are electrons?
400
This is what we call rows on the Periodic Table.
What are periods?
400
This kind of change involves rearranging atoms to change one group of substances into a completely new group of substances.
What is a chemical change?
400
This is the name of the following compound: CO.
What is carbon monoxide?
400
The number of covalent bonds which an atom can form is equal to the number of this kind of valence electrons the atom has.
What is unpaired valence electrons?
500
The charge of this particle is equal in magnitude but opposite in sign to that of an electron.
What is a proton?
500
The atomic number of an element on the Periodic Table tells us this information about an atom of that element.
What is the number of protons?
500
Ice melting to form liquid water is an example of this kind of change?
What is a physical change?
500
This is the name of the following compound: LiBr.
What is Lithium Bromide?
500
A single covalent bond contains this many electrons.