1) What element is this? a) Carbon dioxide b) Water c) Hydrogen d) Helium e) Lithium f) Carbon 2) What is the charge of a proton? a) +1 b) +2 c) 0 d) -1 e) -2 f) neutral 3) What is the smallest part of an element you can have? a) Particle b) Molecule c) Compound d) Atom e) Substance 4) What is the formula for carbon dioxide and water? a) CO 2 + H2O  b) MgO + H2O c) H2SO4 d) CO2 + H2O e) Calcium carbonate 5) _______Mg + O2 ==> _____MgO What numbers go on the line to balance the equation? a) 1 and 1 b) 2 and 2 c) 3 and 3 d) 1 and 2 e) 2 and 1 f) 3 and 1 6) Two or more chemicals that can be easily separated a) A compound b) An element c) A mixture d) A substance e) A particle f) A formulation 7) True or false, there are chemical bonds between the different parts of a mixture. a) True b) False 8) What method could you use to separate the different dyes in an ink? a) Distillation b) Filtration c) Crystalisation d) Chromatography e) Decanting f) Centrifugation 9) What is the pattern called which is formed when you separate the dyes in an ink? a) Cat scan b) Chromatogram c) Solvent d) solvent front e) rf value 10) What method would you use to separate a soluble solid from a solution? a) Filtration b) Decanting c) Rock salt d) Chromatography e) Crystalisation f) Dissolving 11) What was the name of the early (incorrect) model of the atom? a) The plum pudding model b) The Christmas pudding model c) The yorkshire pudding model d) The nut pudding model e) The nuclear model f) Nils Bohr 12) What particles were used to prove that the early model was wrong? a) Alpha b) Beta c) Gamma d) Epsilon e) Proton f) Neutron 13) Which scientist came up with the modern (correct) nuclear model of the atom with electron orbits? a) James Chadwick b) Ernest Rutherford  c) Nils Bohr d) David Bowie e) Albert Einstein f) Louis Pasteur 14) What did James Chadwick discover?  a) Protons b) Neutrons c) Electrons d) Orbits e) Atoms f) Elements 15) In the early 1800s how were elements arranged in the periodic table? a) By atomic number b) Alphabetically c) In groups d) By atomic mass 16) What is the electron configuration of calcium? a) 2 b) 2,1 c) 2,4 d) 2,8,10 e) 2,8,8,2 f) 2,8,8,8 17) What does an element's group number tell you about its electrons? a) How many neutrons it has b) How many protons c) How many electrons it has d) How many electrons in the outer shell e) Its size f) How it reacts 18) How is the modern periodic table arranged? a) in increasing reactivity b) in increasing size c) in increasing atomic number d) alphabetically e) by decreasing reactivity f) by colour 19) An element forms a positive ion with a charge of +2. What can you conclude? a) That it is reactive b) That it is a non metal c) That it is in group 6 d) That it is an alkali metal e) That it is a metal in group 2 20) Spot the odd one out a) Li+ b) Mg2+ c) Cl- d) O2- e) Ca4+ f) F- 21) Why are group 0 unreactive? a) They are noble gases b) They have a full outside shell of electrons c) They form ions d) They are too large e) They need energy f) They have not been discovered yet 22) Chlorine is added to sodium bromide. What is made? a) Sodium chloride and bromine b) Sodium chloride and iodine c) Sodium hydroxide and bromine d) bromine hydroxide and chlorine e) bomine chloride f) sodium bromide



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