Combining
Electron Number and Organization
To bond or not to bond
elements
compounds
100
The joining of atoms to form new substances.
What is chemical bonding?
100
The number of electrons in an atom.
What is the atomic number?
100
This number determines whether an atom will bond with another atom.
What is number of valence electrons?
100
A substance in which there is only one type of particle.
What is a pure substance?
100
The elements join in this specific ______________ to form compounds.
What is a ratio?
200
Electrons are shared, gained, or lost during this.
What is a chemical bond?
200
The number of protons in an element.
What is the atomic number?
200
The group of elements that rarely bonds with other elements.
What are the noble gases or group 18?
200
A pure substance that cannot be broken down into smaller substances.
What is an element?
200
Most substances found every day are this.
What is a compound?
300
The column of elements going up and down on the Periodic Table of Elements.
What is a group?
300
The electron in the outermost shell.
What is a valence electron?
300
The number of electrons on the first energy level.
What is 2?
300
The individual unit of an element.
What is an atom?
300
a pure substance composed of two or more elements.
What is a compound?
400
The first shell or first energy level.
What is the name of the shell that can only hold 2 electrons.
400
Elements are grouped on the Periodic Table of Elements according to this.
What is number of valence electrons?
400
The number of electrons on the second energy level that complete or fill the level.
What is 8?
400
The center of an atom of an element.
What is a nucleus?
400
This is needed to break down a compound.
What is energy or chemical change?
500
Elements in group number 18.
What are the noble gases?
500
Why do sodium and chlorine bond so well?
What is sodium has 1 valence electron and chlorine has 7. Together they share 8 which fill the outer level.
500
The atomic number.
How many electrons are in an atom.
500
NaCl and H2O.
What is the chemical formula for water and table salt?
M
e
n
u