Why is it easier to transfer liquid from one container to another?
Answer: The forces between liquid particles are weaker than the forces between solid particles. This means that liquid particles are further apart and can move about more easily. Since the particles can move, the liquid can flow and take the shape of its container.
What is the main function of stirring rod when transferring liquids from one container to another?
A stirring rod is used for mixing liquids, or solids and liquids. Stir rods are used as part of proper laboratory technique when decanting supernatants because the contact helps to negate the adhesion between the side of the glassware and the supernatant that is responsible for the liquid running down the side.
What steps should you take when pouring liquids from a reagent bottle?
Carefully pour the amount of reagent that you will need, not extra, into the beaker and then close the reagent bottle. Graduated cylinders are unstable so transfer liquids into the labeled beaker first and then pour from the beaker into your graduated cylinder.
What is a beaker used for?
Beakers are useful as a reaction container or to hold liquid or solid samples. They are also used to catch liquids from titrations and filtrates from filtering operations. Laboratory Burners are sources of heat. Burets are for addition of a precise volume of liquid.
How do you handle a beaker?
Handle and Store Glassware Safely Never carry a beaker by its side. Always use two hands carrying any glassware (position one hand under the glass for support). Appropriate glove should be worn whe there is a risk of breakage (e.g. inserting a glass rod), chemical contamination, or thermal hazard.
Why is it called a beaker?
Tell-tale signs of the beaker, of course, are the cylindrical glass, usually made of borosilicate, the flat bottom, the lip or beaded rim and the small spout, in the form of a beak. But interestingly enough, the beaker was likely named after the Beaker people who were master pottery makers during the Neolithic period.
What lab equipment is used for heating a small amount of substance?
Bunsen burner – The Bunsen burner is a metal tube that produces a flame from gas such as methane, propane, or butane. It is used in the lab for heating and sterilizing. The Bunsen burner is named after German chemist Robert Bunsen.
What are the 20 common laboratory apparatus and their uses?
What are the 20 common laboratory apparatus and their uses?
- Microscope. A microscope is a popular piece of lab equipment used to observe things that are too small and are not visible to the naked human eye.
- Test tube.
- Watch glass.
- Crucible.
- Volumetric flasks.
- Beakers.
- Bunsen burner.
- Spatula.
What tools and equipment are commonly used in the laboratory?
lab equipment and uses
| NAME | USE |
|---|---|
| beaker | Used to hold and heat liquids. Multipurpose and essential in the lab. |
| brushes | Used to easily clean the inside of a test tubes and other glassware. |
| Buchner funnel | Used with vacuum flask for performing vacuum filtration. |
| Bunsen burner | Used for heating and exposing items to flame. |
What is for heating a small amount of substance?
beaker. a wide-mouthed container used t transport, heat, or store substances. test tube. a small glass container used to view chemical reactions or to heat small amounts of a substance. triple beam balance.
Are used to pick up or hold small objects?
Tongs
What holds 100ml water?
A 100 ml volumetric flask is designed to hold exactly 100 ml, but if the liquid is poured out it will actually deliver a little less than 100 ml. Glassware designed to deliver, like pipets and burets, are marked with a TD. These pieces of glassware account for the small amount of liquid that remains behind.
What is used to dispense a very small amount of liquid?
A pipette, also known as a chemical dropper, is a glass or plastic tube used to suction small amounts of liquid to enable to transfer the liquid from one place another. A funnel is a laboratory instrument used to pour liquids into another container without the risk of spilling the liquid.
What is used for measuring approximate amounts of liquids?
A graduated cylinder is used to measure volumes of liquids.
Is used for mixing very small amounts of chemicals together?
Pipettes Burettes and Funnels A pipette, also known as a chemical dropper, is a glass or plastic tube used to suction small amounts of liquid to enable to transfer the liquid from one place another….What is used to mix a small amount of chemicals together?
| A | B |
|---|---|
| used to accurately measure and transfer small amounts of liquids | pipet |
What is it called when you mix a small amount of chemicals together?
Funnel. Mixing a small amount of chemicals together. Well Plate. Heating contents in a test tube. Test Tube Clamps.
Which type of glassware is used for general mixing measuring and boiling?
Flasks are useful types of chemistry glassware for containing liquid and performing mixing, heating, cooling, precipitation, condensation, and other processes. These flasks –also known as a science flask, chemistry flask, or a laboratory flask (lab flask)– come in a range of sizes, materials, and uses.
How do you properly handle chemicals?
General rules for handling chemicals
- Do not return chemicals to their original packaging.
- Keep chemical containers closed.
- Never use the wrong or an unmarked reagent.
- Never use spatulas, stirrers or other objects in what was originally a storage container for chemicals.
What does a Erlenmeyer flask look like?
An Erlenmeyer flask, also known as a conical flask (British English) or a titration flask, is a type of laboratory flask which features a flat bottom, a conical body, and a cylindrical neck. Erlenmeyer flasks have wide bases, with sides that taper upward to a short vertical neck.
What’s a Erlenmeyer flask used for?
Mixing