Archivo de la categoría: Lab

Amylase and starch

Publicada el 20/08/2019 por cadem

Amylase is an enzyme found in saliva. It digests (hydrolyses) starch to maltose. Maltose is a reducing sugar. Today in the lab, we are investigating the effect amylase has on starch. We detect starch with iodine solution. Measure 5 cm3 … Sigue leyendo →

Publicado en Lab, Senior 1 2019, Senior 2 2019 | Deja un comentario

Testing for Vitamin C

Publicada el 29/06/2019 por cadem

How to test for vitamin C   Safe­ty pre­cau­tions Wear pro­tec­tive gloves, a mask, and safe­ty glass­es. Per­form this ex­per­i­ment in a well-ven­ti­lat­ed area. Reagents and equip­ment 3% aque­ous so­lu­tion of io­dine in potas­si­um io­dide; a sheet of wa­ter­col­or pa­per; a kiwi; an or­ange; a bell pep­per; a knife; … Sigue leyendo →

Publicado en Lab, Senior 2 2018, Senior 2 2019 | Deja un comentario

Effect of catalase on hydrogen peroxide

Publicada el 08/05/2019 por cadem

This is Activity 5.1 ( Biology Book, page 52 ) Wear eye protection if available. Hydrogen peroxide is a powerful bleach. Wash it off with plenty of water if you get it on your skin. Catalase is found in almost … Sigue leyendo →

Publicado en Lab, Senior 1 2019, Senior 2 2019 | Deja un comentario

Using a Bunsen Burner

Publicada el 24/04/2019 por cadem

We often need to heat materials in a lab. One of the most efficient ways to do this is to use a Bunsen Burner. Bunsen burners are made in a variety of designs. In every one, however, the burner functions … Sigue leyendo →

Publicado en Lab, Senior 1 2019, Senior 2 2019 | Deja un comentario

Measuring temperature in the lab

Publicada el 09/04/2019 por cadem

Today we are measuring the temperature of water when is heated every 1 minute. a) Identify independent variable:  …………………………………..: dependent variable:  …………………………………….. fixed variables AIM: ……………………………………………………………………………………………………….. Materials:       Method 1   Build a table of results 2   Fill a … Sigue leyendo →

Publicado en Lab, Senior 1 2019 | Deja un comentario

Finding CO2 in the air we breathe out

Publicada el 08/11/2017 por cadem

This is what we are trying today in the lab… We will check and see if our cells are really respiring!!

Publicado en Biology, Lab, Senior 1 2017, Senior 2 2017 | Deja un comentario

Looking at cheek cells

Publicada el 30/03/2016 por cadem

Gently scrape the inside of your cheek. Put the scrapings onto the surface of a microscope slide. Add a drop of methylene blue to the scrapings on the slide. This will stain the cells and help you to see them. … Sigue leyendo →

Publicado en Biology, Lab, Senior 2 2016 | Deja un comentario

Expansion and contraction of liquids

Publicada el 05/11/2015 por cadem

Let´s watch this video to be able to understand what we´ll be doing in the lab… It can also help you to think about and answer the questions, the results and the conclusion… Now, let´s look at expansion AND contraction … Sigue leyendo →

Publicado en Lab, Senior 1 | Deja un comentario

What is ph?

Publicada el 01/10/2015 por cadem

Let us learn and revise this topic to be able to understand better what we do in the lab…       Let´s look at some examples of ph… And what about testing substances using red and blue litmus paper? … Sigue leyendo →

Publicado en Lab, Senior 1 2017, Senior 1 2018, Senior 1 2019 | 3 comentarios

Welcome to Practical Skills!!

Publicada el 27/02/2015 por cadem

Hello Senior 1! We are going to work together on Fridays from 13.45 to 14.25 in the Lab. We will work with a booklet that you need to bring every Friday, together with your pen or ball pen and a … Sigue leyendo →

Publicado en 1er año, Lab | Deja un comentario