Questions | Answer |
Atomic Number | Number of protons in an atom of a particular element. |
Isotopes | Atoms of an element that have the same atomic number but a different mass number. |
Electrons | Light negatively charged particles that orbit around the nucleus. |
Chemical Bonds | The attraction, sharing, or transfer of outer shell electrons from one atom to another that hold molecules together. |
Molecules | made of atoms that have combined chemically. |
Compounds | molecules made from more than one type of atom. |
Subscript | The number of atoms of each element in a molecule. |
Structural Formula | Formula which represents the atoms and bonding within a molecule (e.g., H-H). The line represents a shared pair of electrons. |
Molecular/chemical Formula | Formula which indicates the number and type of atoms (e.g., H2) |
Covalent Bond | Chemical bond between atoms formed by sharing a pair of valence electrons. |
Single Covalent Bond | Bond between atoms formed by sharing a single pair of valence electrons. |
Double Covalent Bond | Bond formed when atoms share two pairs of valence electrons |
Triple Covalent Bond | Bond formed when atoms share three pairs of valence electrons |
Electronegativity | Atom's ability to attract and hold electrons. |
Non-Polar Covalent Bond | Covalent bond formed by an equal sharing of electrons between atoms. |
Polar Covalent Bond | Covalent bond formed by an unequal sharing of electrons between atoms. |
Ion | Charged atom or molecule. |
Ionic Bond | Bond formed by the electrostatic attraction after the complete transfer of an electron from a donor atom to an acceptor. |
Element | A substance that cannot be broken down into simpler substances by chemical reactions. |
Atom | Smallest possible unit of an element that retains the physical and chemical properties of its element. |
Atomic Number | Number of protons in an atom of a particular element. |
Atomic Mass | Number of protons and neutrons in an atom |
Isotopes | Atoms of an element that have the same atomic number but different mass number. |
Electrons | Light negatively charged particles that orbit around nucleus. |
Protons | Positively charged particles that are in the nucleus of the atom |
Neutrons | Particles that have no charge and are in the nucleus of the atom |
Nucleus | The center of the atom |