Grade 9 Atomic Structure and Chemical Bonds Quiz

An atom is the basic unit of matter, consisting of a nucleus of positively charged protons and neutrally charged neutrons, with negatively charged electrons orbiting around the nucleus.

An ionic bond is formed when electrons are transferred from one atom to another, creating ions that attract each other. A covalent bond is formed when atoms share electrons to achieve a stable electron configuration.

A chemical bond is a force of attraction between two atoms that holds them together in a chemical compound.

<p>The atomic structure of an atom, including the arrangement of electrons and the types of atoms present, determines the type of chemical bond that can form.</p> Signup and view all the answers

<p>In a polar covalent bond, electrons are shared unequally between atoms, resulting in a partial positive charge on one atom and a partial negative charge on the other. In a nonpolar covalent bond, electrons are shared equally between atoms, resulting in no charge separation.</p> Signup and view all the answers

<p>The number of valence electrons determines the stability and reactivity of an atom. Atoms tend to gain, lose, or share electrons in order to achieve a full outer electron shell, which corresponds to a noble gas electron configuration.</p> Signup and view all the answers