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How to investigate

1- Elegir uno de los tres experimento de libro ( P 31 , 32 , 33 )

2- Traducirlo

3- Seguir los pasos de ´´ How to investigate ´´



Plannig : →Decide onProblem
→ Write your hypothesis
→ Decide variables
→ Decide equipmet
→ Prepare table for results

Cary out : →Choose your instrument
¨ Carry your investigation

The experiment

Interpret : → Look for patterns
→ Compare conclusions cuith your hypotesis→ Present conclusions
Results
Asses your investigations

3-11 : Eleccion y traduccion de los (pasos) experimentos
10-11 : Laboratorio , experimentar , anotaciones
17-11:Entrega de concluciones ( en ingles)

Plannig :

Problem : Hydrogeno bubbles
- Hypothesi the vinegar , being on oxid , corrode the nail
-The metal reacts with the acid,releasing hydrogenbubbles
-Variables : the timer stops , the nail is anuther elemnt ; Not to sonol the
nail corretky , lack of work items

Equipment : → An iron nail → Tes tube → Test tube pack¨ Sand paper → Vinegar (optional)

Table Resuts

Acid
Metal (nail )

Cu Fe ?
Vinegar
-- 4´--
Lemon
-- -- --
HCL
-- 25´ --

Steps :
1) Pour about twoinches of vinegar into your test tube, clear plastic cup or clear glass.
2) If your are using test tube, position it in the test tube rack once you have poured in the vinegar.
3) Take the nail andsand down the tip end of the nail with the sandpaper (maker sure that you havea long nail to stand in the vinegar)
4) Place the nail to rest in the vinegar.
What and in a few minutes you should...