BTEC Applied Science Chemistry License Exam With Complete Solutions 2024.

What is a covalent bond? - Answer A covalent bond is a chemical bond that occurs when one or more electron is shared between the atoms. all intermolecular forces are much weaker than covalent bonds. True or False - Answer True. What are three types of intermolecular forces - Answer London dispersion, dipole-dipole, hydrogen bonding What are London dispersion forces? - Answer The intermolecular attractions resulting from the constant motion of electrons. What is a dipole-dipole force? - Answer The attraction between the positive end of one polar molecule and the negative end of another. What is a hydrogen bond? - Answer the attraction between a hydrogen atom with a positive charge and another atom with a negative charge. How is relative atomic mass calculated - Answer isotopic mass x relative abundance + isotopic mass x relative abundance / 100. What is ionic bonding? - Answer Ionic bonding is the force of attraction between oppositely charged atoms. When does ionic bonding occur? - Answer Ionic bonding occurs when an atom of an element loses one or more electrons and gives it to another atom of a different element.