![]() (9) The nonzero electric field inside the wire is created by excess charges on the surface of the wire and in and on the mechanical battery. (8) At every location inside the wire the direction of the electric field is parallel to the wire. (7) The nonzero electric field inside the wire is created by the moving electrons in the wire. For instance, burettes, commonly used for titration experiments, test tubes and flasks. (6) Mobile electrons inside the wire push each other through the wire. Chemistry Lab Equipment Quiz Term 1 / 17 Ring Stand + Clamp Click the card to flip Definition 1 / 17 Is a piece of scientific equipment, to which clamps can be attached to hold other pieces of equipment. (5) The magnitude of the electric field inside the wire is the same at all locations inside the wire. (4) At location 3 the electric field points to the left. (3) The electric field is zero at all locations inside the metal wire. (2) At location 3 inside the wire the electric field points to the right. (1) The electric field inside the wire varies in magnitude, depending on location. Which of the following statements about the circuit are true? List all that apply. In the circuit in Figure 18.98 a mechanical battery keeps a steady-state current running in a wire that has rather low electron mobility. Burette A graduated glass tube with a tap at one end, for delivering known volumes of a liquid, especially in titrations Electronic Balance Allows the user to quickly and accurately measure the mass of a substance to a level of accuracy impossible for traditional balances to achieve. pH sensor Scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH. Tongs Large pincers for grasping and lifting vessels of heat-resistant material used in high-temperature chemical reactions. Safety Goggles Forms of protective eyewear that usually enclose or protect the area surrounding the eye in order to prevent particulates, water or chemicals from striking the eyes. It is used for holding a test tube in place when the tube is hot or should not be touched. These flasks are usually pear-shaped, with a flat bottom, and made of glass or plastic. ![]() Volumetric flasks are used for precise dilutions and preparation of standard solutions. Unlike the mercury-in-glass thermometer, the contents of an alcohol thermometer are less toxic and will evaporate quickly Test Tube Clamp Used to hold test tubes. a piece of laboratory glassware, a type of laboratory flask, calibrated to contain a precise volume at a particular temperature. Alcohol Thermometer Is an alternative to the mercury-in-glass thermometer and has similar functions. Electrophoresis is a laboratory technique used to separate DNA, RNA, or protein molecules based on the size and electrical charge.
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