NAS 2 Exam – Questions And Answers Matter ✔️Ans - anything that has mass and occupies space Atom ✔️Ans - Smallest particle of an element Molecule ✔️Ans - A group of atoms bonded together Element ✔️Ans - A substance that cannot be broken down into simpler substances Proton ✔️Ans - positively charged particle Neutron ✔️Ans - particle with no charge Electron ✔️Ans - negatively charged particle atomic number ✔️Ans - the number of protons in the nucleus of an atom ionic bond ✔️Ans - A chemical bond resulting from the attraction between oppositely charged ions.polar covalent bond ✔️Ans - A covalent bond in which electrons are not shared equally non polar covalent bond ✔️Ans - a covalent bond in which the bonding electrons are shared equally by the bonded atoms, resulting in a balanced distribution of electrical charge Ion ✔️Ans - An atom or group of atoms that has a positive or negative charge.Cation ✔️Ans - A positively charged ion Anion ✔️Ans - A negatively charged ion 1 / 2
hydrophobic interactions ✔️Ans - a type of weak chemical interaction caused when molecules that do not mix with water coalesce to exclude water hydrogen bond ✔️Ans - A type of weak chemical bond formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom of a polar covalent bond in another molecule.Solution ✔️Ans - A homogeneous mixture of two or more substances Solute ✔️Ans - A substance that is dissolved in a solution.Solvent ✔️Ans - the substance in which the solute dissolves colloidal suspension ✔️Ans - Particles remain suspended within the liquid Emulsion ✔️Ans - The colloidal dispersion of one liquid in another inorganic molecules ✔️Ans - molecules that do not contain carbon and hydrogen organic molecules ✔️Ans - molecules that contain carbon and hydrogen functional groups ✔️Ans - the components of organic molecules that are most commonly involved in chemical reactions amino group ✔️Ans - a chemical group consisting of a nitrogen atom bonded to two hydrogen atoms methyl group ✔️Ans - A chemical group consisting of a carbon atom bonded to three hydrogen atoms.carboxyl group ✔️Ans - A chemical group consisting of a carbon atom double-bonded to an oxygen atom and also bonded to a hydroxyl group.hydroxyl group ✔️Ans - A chemical group consisting of an oxygen atom bonded to a hydrogen atom.
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