Fundamentals
What is a chemical bond?
A chemical bond is an electric attraction that causes certain atoms to join together to form structures that have unique physical and chemical properties.
In the compound NaCl (sodium chloride), is the bond between sodium and chlorine metallic, covalent, or ionic?
Ionic (NaCl)
When hydrogen (H) combines with oxygen (O) to form H2O (water), is the bond metallic, covalent, or ionic?
Covalent (H2O)
Is the bond between aluminum (Al) and sulfur (S) in Al2S3 (aluminum sulfide) metallic, covalent, or ionic?
Ionic (Al2S3)
Which type of elements have full outer shells?
Noble gasses
What are the three types of chemical bonds?
Ionic, covalent, metallic
What type of bonding exists between the iron atoms, covalent, ionic,or metallic?
Metallic
Is the bond between magnesium (Mg) and oxygen (O) in MgO (magnesium oxide) metallic, covalent, or ionic?
Ionic (MgO)
In the molecule CH4 (methane), formed by carbon and hydrogen, is the bond metallic, covalent, or ionic?
Covalent (CH4)
What are valence electrons?
Valence electrons are the electrons on the outermost shell of an atom
What is an ionic bond?
When a metal and a non-metal forms a chemical bond.
When sodium (Na) forms a bond with another sodium atom, what type of bond is created?
Metallic (Na-Na)
When aluminum (Al) forms a bond with another aluminum atom, what kind of bond is established?
Metallic bond (AI-AI)
Does the compound NaF (sodium fluoride) have a metallic, covalent, or ionic bond?
Ionic (NaF)
Why do chemical bonds happen?
To achieve a more stable state
What is a metallic bond?
A chemical bond between two metals.
When carbon (C) forms a bond with oxygen (O) in CO2 (carbon dioxide), is the bond metallic, covalent, or ionic?
Covalent (CO2)
When nitrogen (N) bonds with hydrogen (H) to create NH3 (ammonia), is the bond metallic, covalent, or ionic?
Covalent (NH3)
Does the compound Li2O (lithium oxide) have a metallic, covalent, or ionic bond?
Ionic (Li2O)
If a metal combines with a nonmetal in a chemical bond, which gains electrons to facilitate the bond?
Nonmetals typically gain electrons to facilitate the bond. A metal and nonmetal combined is an ionic bond.
What is a covalent bond?
When two non-metals form a chemical bond.
In the formation of HCl (hydrochloric acid) from hydrogen (H) and chlorine (Cl), is the bond metallic, covalent, or ionic?
Covalent (HCl)
Is the bond between potassium (K) and iodine (I) in KI (potassium iodide) metallic, covalent, or ionic?
Ionic (KI)
When sulfur (S) combines with oxygen (O) to form SO2 (sulfur dioxide), is the bond metallic, covalent, or ionic?
Covalent (SO2)
What kind of elements share their electrons to form covalent bonds?
Nonmetals