Metals and apparatus Flashcards
Criterion B: 6 questions.
Research questions, hypothesis(with scientific reason), Variables, safety measures (and hazards), materials, procedures.
Weighing machine
Measure the mass of any object, apparatus or chemical in the laboratory.
Stirrer
Magnetic, motor, glass rod, used to mix or to reduce adhesion between sides of the glassware and the contents within.
Electrode
An electric conductor which passes electricity to a non-metallic substance.
Electrochemical cell electrodes
Cathode (entering of electrical charge), Anode (leaving of electrical charge)
Spirit lamp/ Alcohol burner
Used to produce an open flame, made of metals.
Battery
A device consisting of one or more electrochemical cells. Used for powering electrical devices.
When connected to an electric load, a redox reaction converts high energy reactants to low energy products while the energy produced is supplied to the external load or circuit as electrical energy.
Wire clips
Made of plastic. Use to create experimental circuits in the laboratory. The wires with clips are used for solutions only and thus a physical entity can be dissolved in water to check electrical conductivity.
Beakers
A cylindrical glassware/plastic container with a flat bottom with capacities ranging from 1 millimeter to several litres.
Test tube
Also known culture tube or sample tube. A glassware consisting of a finger-like length of glass or clear plastic tube open on one side and rounded and closed on the other.
Usually placed in all-purpose stands.
Multimeter
Also known as multitester/ VOM. Usually can measure voltage, current and resistance.
Conical flask
A titration flask consisting of a conical body, flat bottom and cylindrical neck. Ideal for heating and mixing.
Crucible
A small cup like apparatus about the size of a shot glass made of porcelain or non-reactive material. Used to to contain chemical compounds when heated to extremely high temperature.
Spatula
Small stainless steel apparatus, spoon like curved on one end while flat like rectangular on the other end.
Used for scraping, transferring or applying powders and paste like chemicals or treatments.
Bunsen burner
A small gas burner used in the laboratory for heating combustion and sterilization.
Made up of a metal tube gas intel at the bottom of the tube.
Tripod
Three-legged platform used to support flasks and beakers. Usually made of stainless steel or aluminum for portability in the laboratory.
Wire gauze
Placed over a tripod stand to provide a flat base for glassware. The edges of the wire gauze are often turned inward.
Led bulb
Used in a circuit as a tester for electrical conductivity.
Hand gloves
To prevent burns or rashes on the skin from coming into contact with any of the chemicals.
Cork
Partially inserted in a container to form a seal.
Often made of rubber or wood.
Corks may have holes to allow for thermometers, tubes and other devices without the chemicals leaking out.
Condenser
Used to condense vapours. Used for distillation, reflux and extraction.
Apparatus parts of electrochemical cell.
2 beakers, electrodes, electrolyte, wires, Salt bridge, lamp
Apparatus set up of electrolytic cell
Battery, 1 beaker, electrodes, electrolyte, wires.
Conversion of energy in an electrolytic cell.
Electrical to chemical