Ejercicio 1
Work in pairs. Read the following experiment instructions. (Trabajen en parejas. Lean las siguientes instrucciones de experimentos.)
Respuesta orientativa: Se leen los cuatro procedimientos y se identifican sus materiales y verbos de acción. Cada experimento se distingue por un ingrediente característico: pegamento (slime), vinagre con bicarbonato (volcán), sal de Epsom (cristales) y aceite vegetal (lámpara de lava).
Parte 1.a
Making Slime (Hacer slime)
- Mix 100\,\text{ml} of white glue in a bowl with 50\,\text{ml} of water.
- Add a few drops of food coloring and mix well.
- Slowly pour 50\,\text{ml} of liquid starch into the mixture while stirring continuously.
- Knead the slime until it reaches the desired consistency.
Respuesta
Slime = pegamento blanco + agua + colorante + almidón líquido.
Parte 1.b
Volcano Eruption (Erupción de volcán)
- Create a cone shape using clay or playdough on a flat surface.
- Mix 200\,\text{ml} of vinegar with a tablespoon of baking soda in a small container.
- Pour the vinegar and baking soda mixture into the top of the volcano and watch it erupt.
Respuesta
Volcán = vinagre + bicarbonato de sodio dentro de un cono de plastilina.
Parte 1.c
Growing Crystals (Cultivo de cristales)
- Dissolve 100\,\text{g} of Epsom salt in 500\,\text{ml} of hot water in a glass jar.
- Add a few drops of food coloring for desired color.
- Place a string or pipe cleaner in the solution and let it sit for several days to allow crystals to form.
Respuesta
Cristales = sal de Epsom disuelta en agua caliente + hilo o limpiapipas.
Parte 1.d
Homemade Lava Lamp (Lámpara de lava casera)
- Fill half a clear plastic bottle with water.
- Add 100\,\text{ml} of vegetable oil to the bottle.
- Drop a few drops of food coloring into the bottle.
- Add a tablespoon of salt and watch the colorful bubbles rise and fall like a lava lamp.
Respuesta
Lámpara de lava = agua + aceite vegetal + colorante + sal.
