inorg lab

51問 • 1年前

問題一覧

specialized clothing or equipment worn for protection against hazardous and infectious materials”

Personal Protective Equipment

Used for mixing, stirring, and heating chemicals • Have spouts on their rims to aid in pour

beakers

a.k.a Conical Flask • has a narrow neck and expands toward its base. • Allows easy mixing and swirling of the flask without too much risk of spilling

erlenmeyer flask

• a.k.a. Boiling Flask • Has round bottom and long neck • Used to hold liquids and can be easily swirled and heated

florence flask

• a glass tube with one end open and the other end closed • used to hold small samples for qualitative assessment and comparison

test tubes

• Small clay cup made of a material that can withstand extreme temperatures • Used for heating substances and come with lidS

crucible

Used to hold crucible

crucible tong

• a round piece of glass that is slightly concave/ convex (think of a lens) • can hold a small amount of liquid or solid • can be used for evaporation purposes • can function as a lid for a beaker

watch glass

can be made of plastic or glass and can have either a short stem or a long stem • Used to channel liquid or fine-grounded substances into containers with small opening

funnel

• Used for measuring volume of liquids • There are several markings up and down the length of the container with specific increments.

graduated cylinder

• A round flask with a long neck and flat bottom • Used to measure an exact volume of liquid • There is a small line on the neck that indicates how far to fill the bottle

volumetric flask

Small glass tubes with narrow tips on one end and a rubber bulb on the other • Suck up liquid that can then be squeezed out in small drops

droppers

• Measuring an exact volume of liquid and placing it into another container – Volumetric Pipette – Graduated/ Measuring/ Mohr’s Pipette

pipette

• A glass tube that is open at the top and comes to a narrow pointed opening at the bottom. • Right above the bottom opening is a stopcock that can be turned to control the amount of liquid being released.

burette

• There are markings along the length of the tube that indicate the volume of liquid present. • Used for extremely accurate addition of liquid, especially during TITRATION

burette

Used to suspend burets, beakers, flasks, crucibles, etc. in some cases, a heat source

iron stand ring and clamps

• Used for grabbing things that should not be touched by hands

forceps

• Used for scooping chemicals

spatula and scoopulas

• Used for measuring temperature

thermometer

• a mechanical apparatus that is connected to a flammable gas source. • Used to produce an open flame

bunsen burner

• There is a knob to adjust the amount of gas flow and a rotating collar that controls airflow. • These both must be adjusted to get an ideal flame for heating purposes.

bunsen burner

Three balace

analytical balance

• Used for cleaning test tubes and other narrow mouth glasswares

test tube brush

Used to distribute evenly heat and support beakers during heating

wire gauze

Has an open center • Used to suspend crucibles

clay triangle

• Made of porcelain or borosilicate glass • Used to heat liquids for evaporation

evaporating dish

• Made of glass, plastic, borosilicate, and topped by caps or stoppers • Intended to contain chemicals

reagent bottle

Used to move test tubes (whether due to heat or safety reasons)

test tube holder

A three-legged platform used to support or hold flasks and beakers

tripod

• Used to mix chemicals and liquids

stirring rod

• Used for viewing or making enlarged images of very small objects

microscope

Used to crush, mash or grind substances

mortar and pestle

Used to produce an open flame for heating, sterilization or combustion

alcohol lamp

Used for sucking or absorbing liquids through a narrow tube

aspirator

• Used to connect two other pieces of jointware to each other

adapter

Used in liquid-liquid extraction to separate (partition) components of a mixture of two immiscible liquids (different densities)

seperatory funnel

• Usually a long, circular glass tube. Inside the tube there is another, smaller tube • Used to cool hot gases into liquids

condenser

• Used to separate mixtures of two liquids with different boiling points

distilling flask

• Used to verify gas production in fermentation

fermentation tube

A shallow cylindrical glass or plastic lidded dish that biologists use to culture cells

petri dish

• A small glass bottle of known volume for determining the relative density of liquids and solids by weighing

pycnometer

A small volumetric flask with a long graduated neck used in pharmacy for determining cinnamaldehyde in cassia bark and other forms of cinnamon

cassia flask

precipitation

• The process of separation of liquid from solid and other immiscible liquids, by removing the liquid layer at the top from the layer of solid or liquid below.

decantation

• The process can be carried out by tilting the mixture after pouring out the top layer

decantation

• Common method of separation of solids and liquids • the act of pouring a mixture onto a membrane (filter paper) that allows the passage of liquid (the filtrate) and results in the collection of the solid (residue) – Gravity filtration – Vacuum filtration

filtration

• Often better with organic solvents • High surface area

fluted filter paper

• separation process which uses the action of centrifugal force to promote accelerated settling of particles in a solid-liquid mixture • Uses a centrifuge machine

centrifugation

• Pipets deliver known volume of liquids. – Transfer pipet: calibrated to deliver one fixed volume. – Measuring pipet: delivers a variable volume

pipets

• A typical balance with a capacity of 100–200 g and a readability of 0.01–0.1 mg. – Readability > the smallest increment of mass that can be indicated.

analytical balance

philo

ユーザ名非公開 · 100問 · 2年前

philo