AQA Chemistry Paper 1 Questions And Correct Answers

AQA Chemistry Paper 1 Questions And Correct Answers

Electron -Answer:-Has -1 charge and a very small mass.




The group (column) in which an atom is found... -Answer:-tells you the
number of electrons in the outer shell




Element -Answer:-A substance made up of only one type of atom. Cannot be
broken down chemically into any simpler substance




isotope -Answer:-atoms that have the same number of protons but different
number of neutrons




The law of conservation of mass -Answer:-The total mass of the products
formed in a reaction is equal to the total mass of the reactants




Mass number - atomic number ... -Answer:-Tells you the number of neutrons
in the atom




Neutron -Answer:-Part of an atom with no charge, but a mass of 1

, Early periodic table -Answer:-An arrangement of elements in the order of
their atomic mass




Product -Answer:-A substance made as a result of a chemical reaction




Proton -Answer:-Sub-atomic particle with +1 charge and a mass of 1




Reactant -Answer:-A substance we start with before a chemical reaction takes
place




Shell -Answer:-An area in an atom, around its nucleus, where electrons are
found




Word equation -Answer:-Shows chemicals reacting together on the left, and
products on the right




Relative atomic mass (Ar) -Answer:-How much an atom weighs. Found on the
Periodic Table.