What is a covalent bond Chapter 8?
Covalent bonds- Two atoms share one or more pairs of outer-shell electrons.
What is a covalent bond 8th grade?
A covalent bond is the force of attraction that holds together two atoms that share a pair of valence electrons. The shared electrons are attracted to the nuclei of both atoms. This forms a molecule consisting of two or more atoms. Covalent bonds form only between atoms of nonmetals.
Why are atoms forced to share electrons in a covalent bond?
Covalent bonding usually occurs between two nonmetals, due to similar electronegativity or same electron affinity. They are forced to share electrons rather than gain or lose an electron, and are still able to achieve octet rule.
How are resonance structures used quizlet?
How are resonance structures used? Chemists use resonance structures to envision the bonding in molecules that cannot be adequately described by a single structural formula. Just as an atomic orbital belongs to a particular atom, a molecular orbital belongs to a molecule as a whole.
What is called electronegativity?
Electronegativity is a chemical property that describes the tendency of an atom or a functional group to attract electrons toward itself. The electronegativity of an atom is affected by both its atomic number and the distance that its valence electrons reside from the charged nuclei.
What type of covalent bond is CHC?
The carbon-hydrogen bond (C–H bond) is a bond between carbon and hydrogen atoms that can be found in many organic compounds. This bond is a covalent bond meaning that carbon shares its outer valence electrons with up to four hydrogens.
What is meant by covalent bond?
covalent bond, in chemistry, the interatomic linkage that results from the sharing of an electron pair between two atoms. The binding arises from the electrostatic attraction of their nuclei for the same electrons.
Are covalent bonds explosive?
Covalent compounds that have a large unequal sharing of electrons have the capability to fall apart very easily and explosively.
Is nonpolar hydrophobic?
Hydrophobic literally means “the fear of water”. Hydrophobic molecules and surfaces repel water. Hydrophobic molecules are usually nonpolar, meaning the atoms that make the molecule do not produce a static electric field. In polar molecules these opposite regions of electrical energy attract to water molecules.
For which purpose do chemists utilize Vsepr theory?
Valence shell electron pair repulsion theory, or VSEPR theory (/ˈvɛspər, vəˈsɛpər/ VESP-ər, və-SEP-ər), is a model used in chemistry to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms.
How is an electron dot structure used to represent a covalent bond?
Electron sharing occurs so that atoms attain the configurations of noble gases. How is an electron dot structure used to represent a covalent bond? An electron dot structure shows the shared electrons of a covalent bond by a pair of dots. Atoms form double or triple bonds by sharing two or three pairs of electrons.
What elements make a covalent bond?
Water is a familiar substance comprised of hydrogen and oxygen linked by covalent bonds. These elements are considered to be covalent. Other elements that can form covalent bonds include nitrogen, carbon and fluorine.
What are some examples of covalent bonds?
Some examples of covalent bonds are methane (CH 4), hydrochloric acid (HCL), water (H 2O) and ammonia (NH3). Hydrochloric acid pulls the electron pair toward the chlorine atom , which has a higher electronegativity to form a covalent bond.
What are the properties of covalent bonds?
General physical properties that can be explained by the covalent bonding model include boiling and melting points, electrical conductivity, bond strength, and bond length.
What happens to electrons in a covalent bond?
In covalent bonding, both atoms are trying to attract electrons–the same electrons. Thus, the electrons are shared tightly between the atoms. The force of attraction that each atom exerts on the shared electrons is what holds the two atoms together.