====== Water Stream Deflected By A Charge Rod ====== {{tag> needs_review untagged unlocated}} {{5a40_40.jpg?400|}} // // ===== Description ===== Show that water is a polar molecule with a permanent dipole, causing it to be deflected by the charged rod. ===== Purpose ===== Demonstrates the polarity of water ===== Apparatus ===== - Ebony rod - Cat's fur - Constant water source ===== Setup ===== 1. Charge the ebony rod by rubbing it with the cat's fur 2. Bring the rod close to the water source 3. You will see a deflection in the stream as shown in the picture In water, the oxygen atom is more electronegative than the hydrogen atom, creating a permanent dipole on a water molecule. If you move a positive + charged rod close to water: 1. The water molecules would orient themselves so their oxygen atoms would point towards the rod 2. Like charges attract, and water is bended towards the rod. If you move a negative - charged rod to water, the same thing happens, but this time the hydrogen would point towards the rod. Updated on 01/19/16 ===== Notes ===== // Demo room information // | **Location** | ---- | | **Maker** | Unknown | | **Current State** | Working |