This question is about elements and compounds. A dilute aqueous solution of potassium chloride undergoes electrolysis. Oxygen is produced at the anode. (i) State what is meant by the term electrolysis. ......................................................................................................................................... . ......................................................................................................................................... . ................................................................................................................................... (ii) Write an ionic half-equation for the production of oxygen at the anode. ...................................................................................................................................

Chemistry

IGCSE&ALevel

CAIE

Exam No：0620_s24_qp_43 Year：2024 Question No：3(c)

Answer:

8.1.1. Describe the Periodic Table as an arrangement of elements in periods and groups and in order of increasing proton number / atomic number

8.1.2. Describe the change from metallic to non-metallic character across a period

8.1.3. Describe the relationship between group number and the charge of the ions formed from elements in that group

8.1.4. Explain similarities in the chemical properties of elements in the same group of the Periodic Table in terms of their electronic configuration

8.1.5. Explain how the position of an element in the Periodic Table can be used to predict its properties