Chemistry

Subdecks (2)

Cards (56)

  • Metallic bond= The attraction between positive metal ions and delocalised electrons within a metallic lattice structure.
  • Electrolyte= A substance that conducts electricity when dissolved in water
  • Ionic bond= A strong electrostatic force of attraction between oppositely charged ions, formed when one atom has lost or gained an electron to become an ion.
  • Covalent bond= a chemical bond formed between two non-metal atoms by the sharing of electrons
  • Alkali metals=group one, react with water to form hydroxide ions
  • Noble gases= group zero, unreactive elements which have full outer shells
  • Halogens= group seven, reactive elements which readily gain an electron to form negative ions
  • avogadro’s constant=the number of moles,molecules or ions in a substance
  • cation=positive ion
  • anion=negative ion
  • conservation of mass=no atoms are lost or gained during a chemical reaction
  • limiting reactant=reactant that is completely used up first
  • Diamond=giant covalent structure made up of strong carbon bonds with 4 other carbons
  • Fullerene’s=Molecules of carbon with hollow shapes, they are very stable and can conduct electricity
  • Graphite= 2 layers of carbon atoms bonded together in a hexagonal lattice,form 3 covalent bonds with other carbon atoms
  • graphene=layer of graphite,good conductivity
  • Reduction=gain electrons/lose oxygen
  • Oxidation= gain of oxygen, loss of electrons
  • intermolecular forces=forces between molecules,strength of these impacts boiling point/melting point
  • lattice=a repeating pattern of atoms or molecules held together by strong covalent bonds
  • mass number=total number of neutrons and protons
  • subatomic particles=particles smaller than an atom. electrons, protons, neutrons
  • simple molecules=molecules containing a fixed number of atoms covalently bonded together
  • acid= H+ ions in solution,pH of 0-7
  • neutralisation reaction=when an acid reacts with an alkali to form salt and water
  • alloy=Metal compound made from 2+ metals together
  • atomic number= number of protons
  • isotopes=same element with different number of neutrons and same amount of protons