List 50 Laboratory Apparatus used in
CHEMISTRY

1: safety goggles

2: beakers

3: test tubes

4: tongs

5: racks 6: watch glasses

7: crucible

8: funnels

9: graduated cylinder

10: volumetric flask

11: droppers 12: pipette

13: ring stand

14: rings

15: clamps

16: tongs

17: forceps

18: spatulas scoopulas

19: thermometer

20: Bunsen burner

21: balance

22: Florence flask

23: conical flask

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )