Bonding & Properties of Matter- Covalent Bonding Flashcards
Covalent bonds are formed when non-metal atoms share _____ of electrons.
Covalent bonds are formed when non-metal atoms share pairs of electrons.
Covalent bonds are _______.
Covalent bonds are strong.
Many covalent compounds consist of _____, ______ __________ e.g., oxygen, chlorine and water.
Many covalent compounds consist of small, simple molecules e.g., oxygen, chlorine and water.
They are usually _____ or _______ with low melting and boiling points.
They are usually gases or liquids with low melting and boiling points.
Small covalent molecules have ____ intermolecular forces between the molecules.
Small covalent molecules have weak intermolecular forces between the molecules.
When these substances are heated it is the ________________ ______ that break not the ________ _____.
When these substances are heated it is the intermolecular forces that break not the covalent bonds.
Simple covalent molecules do not _______ ___________ because the molecules do not have an overall charge.
Simple covalent molecules do not conduct electricity because the molecules do not have an overall charge.
Polymers are very _____ molecules held together by ______ covalent bonds.
Polymers are very large molecules held together by strong covalent bonds.
Some covalently bonded substances have giant structures eg _______ ________, ________ and ________.
Some covalently bonded substances have giant structures eg silicon dioxide , diamond and graphite.
