Wild card
A noble gas has a ______outer energy level
Stable
At the center of an atom is the _______
Nucleus
How could you observe the bonding of two atoms?
Draw a bohr model of each element
When a positively charged ______and I negatively charged ______, are attracted to each other, the bond that form is referred to as a _______ bond
Ion; Ion ; ionic
A double bond is a __________ bond involving _______pairs of electrons
Covalent; two
There are two main dot structures that help us understand element bonded. They are _____ dot and ____ model
Lewis dot and Bohr model
The nucleus contains _______
Protons and neutrons
Magnesium will readily combined with any two atoms of chlorine to form Magnesium chloride. Explain.
Magnesium has two electrons in its outer shell, while one chlorine has seven and its outer shell. Therefore, The two electrons for magnesium have been gained by two chlorine atoms
A _______is an atom that has _______or lost an electron
ion; Gained
When two or more atoms share electrons _______, it results in a Positive charge on one end, and a negative charge on the other, they are held together by a(n) _________
Unevenly; polar
A sodium ion that has a positive charge is written as _____
Na+
If an atom has the same number of protons and electrons, its charge is ________
neutral
Removing electrons that are closer to the nucleus takes _______ ________than removing electrons that are ________ _______ from the nucleus
More energy; farther away
An ion is a ______ that has gained or lost a(n) ______
Atom; Electron
A compound is a ______ ________ that consists of two or more elements.
Pure substance
A molecule of water is joining covalent bond, and his written as
H 2 0
A positively charged sulfur atom is written as
S +
An element of magnesium has how many electrons on its outer shell_______
Two
When an atom _______an electron and because positively charged, we refer to it as a _______ ion
Loses, positive
A bond that forms between atoms when they gain or lose electrons is called a _______bond
Ionic bond
For a neutral atom of an element, the number of ______and ______ must be the same.
Protons and electrons
A Negatively charged chlorine atom is written as
Cl -
Removing electrons that are _______to the nucleus takes energy
closer
When an atom________ an electron, it becomes _________charged. We refer to it as a negative ion.
Gains; Negatively
The bond that forms between atoms that have _______ ________is called a covalent bond
Shared electrons