Chemistry Y09 Autumn Flashcards
1.1 Mixture
more than one substance that are not chemically joined together
1.2 Compund
substance made from different elements chemically bonded together
1.3 Element
a substance containing only one type of atom
1.4 Formulation
a mixture that has been designed as a useful product
1.5 Period
a row on the periodic table, which represents the number of electron shells of an element
1.6 Group
a column on the periodic table, which represents the number of outer shell electrons of an element
1.7 Ion
an electrically charged particle which has lost or gained electrons
1.8 Molecule
a particle made from atoms joined together by covalent bonds
1.9 Delocalised electrons
electrons which are free to move through a structure
1.1 Trend
a pattern in the physical or chemical properties of substances
2.1 Hydrochloric acid
HCl
2.2 Sulfuric acid
H2SO4
2.3 Nitric acid
HNO3
2.4 Ammonia
NH3
2.5 Sodium hydroxide
NaOH