8.2. Group I properties
A subsection of Chemistry, 0620, through 8. The Periodic Table
Listing 10 of 36 questions
For Examiner's Use The table gives some information about five elements, A, B, C, D and E. Complete the table by writing either metal or non-metal in the last column. element properties metal or non-metal A shiny solid which conducts electricity B reddish brown liquid with a low boiling point C a form of carbon which is black in colour and conducts electricity D white solid which is an insulator and has a high melting point E dull yellow solid which does not conduct heat Describe how metallic character changes across a Period. Sodium is in Group I of the Periodic Table. Draw a diagram to show the full electronic structure of sodium. Complete the equation to show what happens when a sodium atom forms a sodium ion. Na Na+ + For Examiner's Use Complete these sentences about the properties of the Group I elements using words from the list. acidic basic decrease hard increase lithium potassium soft The Group I elements are relatively metals which in reactivity going down the Group. Sodium reacts more violently with water than . The Group I metals all form oxides.
0620_w08_qp_2
THEORY
2008
Paper 2, Variant 0
View
Some properties of the Group I elements are given in the table. element melting point / °C boiling point / °C density in g / cm3 lithium 0.53 sodium 0.97 potassium 0.86 rubidium 1.53 caesium 1.88 Predict the boiling point of potassium. Which Group I elements are liquids at 50 °C? How, in general, does the density of the Group I elements change down the group? Complete the following sentences about the Group I elements using words from the list below. crystallising decreases hard increases melting similarity soft The Group I elements are relatively metals which show a trend in point and reaction with water. The reactivity with water down the group. The equation for the reaction of sodium with water is given below. 2Na + 2H2O → 2NaOH + H2 Write a word equation for this reaction. Chlorine reacts with sodium to form sodium chloride. Complete the equation for this reaction. Na + Cl 2 → NaCl Chlorine is a diatomic gas. What do you understand by the term diatomic ? Describe the arrangement and motion of the molecules in chlorine gas. arrangement motion Draw a diagram to show the arrangement of the electrons in a molecule of chlorine. Show only the outer electrons.
0620_w10_qp_22
THEORY
2010
Paper 2, Variant 2
View
Questions Discovered
36