The Periodic Table

Worked examples (12)extended set

• 1Locating elements on an outline Periodic Table
• 2Using the Periodic Table to count and name elements
• 3Statements about the Periodic Table (multiple choice)
• 4Group, period and ion from an electron shell diagram
• 5Formula from positions on an outline table (multiple choice)
• 6Explaining similar chemical properties within a group
• 7Predicting the properties of strontium and selenium
• 8Placing unknown elements in Period 3 from data
• 9Testing the conductivity of elements
• 10Group number, ion charge and formulae
• 11Four ions with the same electronic configuration
• 12Deductions from six elements on an outline table

Model answers (6)

• ✓Model answer — Paper 4 short-answer style
• ✓Model answer — Paper 4 structured style
• ✓Model answer — Paper 4 structured style
• ✓Model answer — Paper 4 (Extended) structured style
• ✓Model answer — Paper 4 (Extended) structured style
• ✓Model answer — Paper 4 (Extended) extended-response style

Worked examples (12)extended set

• 1Melting points down Group I: predicting rubidium
• 2The halogens at room temperature
• 3A property that decreases across a period (multiple choice)
• 4Halogen melting and boiling points: predicting astatine
• 5Identifying halides from trend clues
• 6Completing a table of trends across Period 3
• 7Group I metals with water: observations and trend
• 8Displacement results give the order of reactivity
• 9Iodine compared with chlorine (multiple choice)
• 10Trends in an unfamiliar group: Group V
• 11Sorting four unknown elements by their properties
• 12Identifying a Group I metal from the volume of hydrogen

Model answers (6)

• ✓Model answer — Paper 4 short-answer style
• ✓Model answer — Paper 4 structured style
• ✓Model answer — Paper 4 structured style
• ✓Model answer — Paper 4 (Extended) structured style
• ✓Model answer — Paper 4 (Extended) structured style
• ✓Model answer — Paper 4 (Extended) structured style

Worked examples (12)extended set

• 1Choosing alkali metals from their trends
• 2Appearance and physical trends of the halogens
• 3Potassium with water: observations, equation and gas volume
• 4Reading a halogen displacement results grid
• 5Chlorine and magnesium bromide: ionic equation and electron transfer
• 6Predicting the properties of caesium (multiple choice)
• 7Predicting the properties of astatine from a graph
• 8Sodium burning in bromine vapour
• 9Identifying an unknown halide in the laboratory
• 10Identifying two halogens from the mass of a gas sample
• 11Why the most reactive alkali metal gives the least hydrogen
• 12How much chlorine is needed to displace iodine

Model answers (6)

• ✓Model answer — Paper 4 short-answer style
• ✓Model answer — Paper 4 short-answer style
• ✓Model answer — Paper 4 structured style
• ✓Model answer — Paper 4 structured style
• ✓Model answer — Paper 4 (Extended) structured style
• ✓Model answer — Paper 4 (Extended) structured style

Worked examples (12)extended set

• 1Spotting the transition elements in a data table
• 2Choosing symbols from the first row of transition elements
• 3Formulae from Roman numerals
• 4Telling iron(II) from iron(III) in the laboratory
• 5A transition-metal oxide as a catalyst
• 6What chromium has that potassium does not (multiple choice)
• 7Transition metals versus alkali metals from a bar chart
• 8Identifying a chromium(III) salt
• 9Oxidation numbers of transition metals in ions and compounds
• 10Copper(II) ions oxidise iodide ions
• 11Finding the oxidation number of iron in its chloride
• 12Water of crystallisation in blue copper(II) sulfate

Model answers (6)

• ✓Model answer — Paper 4 short-answer style
• ✓Model answer — Paper 4 short-answer style
• ✓Model answer — Paper 4 structured style
• ✓Model answer — Paper 4 (Extended) structured style
• ✓Model answer — Paper 4 (Extended) structured style
• ✓Model answer — Paper 4 (Extended) structured style

Worked examples (12)extended set

• 1Finding the noble gases on an outline Periodic Table
• 2Which atom is a noble gas? Shell diagrams
• 3Two statements about neon (multiple choice)
• 4Estimating the boiling point of argon from a trend
• 5Density of a noble gas from its relative atomic mass
• 6Ions with noble gas electronic configurations
• 7Predicting the density of krypton (multiple choice)
• 8The gas left after air passes over hot copper
• 9Picking out the noble gases from data
• 10Why chlorine is diatomic but argon is monatomic
• 11Equal volumes of helium, argon and chlorine
• 12Identifying a noble gas by weighing it

Model answers (6)

• ✓Model answer — Paper 4 short-answer style
• ✓Model answer — Paper 4 short-answer style
• ✓Model answer — Paper 4 structured style
• ✓Model answer — Paper 4 structured style
• ✓Model answer — Paper 4 (Extended) structured style
• ✓Model answer — Paper 4 (Extended) extended-response style