Experiment 1: Common Laboratory Operations

Question 1

where the fuel and air mixes

Answer 1

barrel

Question 2

entrance of the air

Answer 2

air hole

Question 3

regulates/controls the amount of fuel has to be combusted

Answer 3

gas spud

Question 4

regulates/controls the amount of air coming in and to close and open the air holes

Answer 4

collar

Question 5

entrance of the fuel gas

Answer 5

gas inlet

Question 6

supports the bunsen burner

Answer 6

base

Question 7

valves the controls the fuel gas coming in to the gas spud

Answer 7

gas regulator

Question 8

place of ignition

Answer 8

mouth

Question 9

• blue color
• open air holes
• maximum air needed
• complete combustion

Answer 9

nonluminous flame

Question 10

• yellow color
• close air holes
• less amount of air needed
• incomplete combustion

Answer 10

luminous flame

Question 11

curve line present in a liquid inside the container

Answer 11

meniscus

Question 12

used in transparent liquid

Answer 12

lower meniscus

Question 13

used in colored and opaque liquid

Answer 13

upper meniscus

Question 14

guide the flow of the fluid, prevent the spillage of water at the side of the wall of the container

Answer 14

glass rod

Question 15

it is the separation of each components/substances in a given mixture

Answer 15

process of separation

Question 16

process in which solid converts into gas directly without converting into liquid

Answer 16

sublimation

Question 17

process of separating suspended solid matter from a liquid or gaseous fluid

Answer 17

filtration

Question 18

process for the separation of mixtures of immiscible liquids or of a liquid and a solid mixture such as a suspension

Answer 18

decantation

Question 19

collecting of molecules by the external surface or internal surface

Answer 19

adsorption

Question 20

liquid becomes gas

Answer 20

evaporation

Question 21

substance clinging at the bottom of the watch glass, white crystals

Answer 21

naphthalene

Question 22

substance left in the beaker

Answer 22

salt, coloring and sand

Question 23

clear liquid left at the container

Answer 23

supernatant liquid

Question 24

solid left at the container

Answer 24

residue

Question 25

used to absorb the coloring and odor

Answer 25

activated carbon

Question 26

clear liquid that pass through the filter paper is called

Answer 26

filtrate