Lab equipiment Flashcards
(58 cards)
Beaker
Beakers are used to measure the approximate volume of liquids
Bunsen Burner
The bunsen burner mixes butane gas and air to produce a soot-Less flame It heats solutions on top of the wired gauze
Erlenmeyer Flask
The flask has conical bottom and an elongated neck.
-It is used to measure the approximate volume of liquids,
- and to mix liquids and dissolve salts.
Overflow Jar
- aluminum can
- it is used to measure the volume of irregular solids (solids that cannot be measured using a ruler)
Round bottom flask
- used to mix solutions, dissolve salts, heat liquids
- they can have 2 or 3 necks
- round
simple microscope
- has a handle and a single lens
- used to study specimens in the field (example: fossils, rocks, insects)Examples of scientists who use it are
paleontologists (studies fossils), entomologists (studies insects) and geologist (studies
rocks and minerals).
Test tube rack
- made of wood
- has slots where test tubes can be placed during experiments
water dropper bottle
- made of plastic
- used to wash off excess stain during the process of making a slide
Acid cabinet
- two sections: 1) one to store corrosive substances like acids 2) one to store flammable substances like alcohols
- there’s a lock on the cabinet to keep safe
Digital thermometer
- it’s digital, means electric
- digital thermometer has an on/off switch and can switch to change readings between fahrheight and celsius.
-do not use a digital thermometer with acidic liquids
Electronic balance
- used to measure the mass of a substance
- all readings are in grams or milligrams
forceps
- stainless steel and have a hinge at one end
- used to handle substances that should not be touched with bare hands,
- used to dissect organisms
- hold things too small for fingers
Compound microscope
- used to observe microorganisms, things that cannot be seen by the naked eye
- this has more than one lens to magnify
ring clamp
- holds the wire gauze when substances have to be heated using bunsen burner
- made of steel
- clamps onto bunsen burner
- use gloves and wire guaze when handling
test tube
- made of glass, used to mix and store liquids and chemicals
side arm test tube
- test tube with side arm at the top
- water vapor can be collected through the side arm
- desalination experiments
stand
- used when substances have to be heated during experiment
-has a heavy base and a rod screwed to bottom
side arm erlenmeyer flask
- has a side arm on the elongated neck
- used to separate salt from water (like side arm test tube)
- the difference is it used to measure LARGER QUANTITIES
Graduated cylinder
- used to measure the volume of liquids accurately
- find the volume of irregular solids
mortar and pestle
- used to powder, crush, and mix crystals or chemicals
- made of porcelain
- mortar is the bowl part, pestle of the mixer part
evaporating dish
- made of porcelain (fine clay that is very heat resistant)
- used to heat or evaporate liquids
glass stirrer
- used to dissolve substances or mis two solutions
- advantage of using glass stirrer is that it is heat resistant and doesn’t interfere a chemical reaction
wire gauze
-square steel wire mesh, thick layer of plaster of Paris in the center
- many objects are placed on top of the wire gauze to protect from flame
- should be 1 inch from bunsen burner
water dropper/eye dropper
- if one needs water or any liquids in small quantities
- example: wet slide under microscope