An atom is initially neutral. It can become charged by losing or gaining subatomic particles. Which row in the table correctly shows how positive and negative ions are formed from a neutral atom?
Positive IonNegative IonAgain of protonsloss of electronsBgain of electronsloss of protonsCloss of electronsgain of electronsDloss of protonsgain of protons\begin{array}{|c|c|c|} \hline & \text{Positive Ion} & \text{Negative Ion} \\ \hline \text{A} & \text{gain of protons} & \text{loss of electrons} \\ \hline \text{B} & \text{gain of electrons} & \text{loss of protons} \\ \hline \text{C} & \text{loss of electrons} & \text{gain of electrons} \\ \hline \text{D} & \text{loss of protons} & \text{gain of protons} \\ \hline \end{array}ABCDPositive Iongain of protonsgain of electronsloss of electronsloss of protonsNegative Ionloss of electronsloss of protonsgain of electronsgain of protonsRow A
Row B
Row C
Row D
452 exam-style questions on CIE IGCSE Physics 4.2 Electrical quantities, covering 4.2.1a Positive and negative charge, 4.2.1b Charging by friction and detecting charge, 4.2.1c Electrical conductors and insulators, 4.2.1d Electric fields and electric field patterns, 4.2.2a Electric current, charge and measuring current, 4.2.2b Conduction in metals and the direction of current, 4.2.2c Direct current and alternating current, 4.2.3a Electromotive force, 4.2.3b Potential difference and voltmeters, 4.2.4a Resistance, 4.2.4b Resistance of a metallic wire, 4.2.4c Current–voltage graphs, and 4.2.5 Electrical energy and electrical power. Each one has a worked solution and a mark scheme showing where the marks go.