FINDING DENSITY

This week we’ve benn looking at density. Density is a measurement of how solid something is. Specifically it is the mass per unit volume of a substance. If you have two objects of the exact same size (volume), the more dense object will weigh more than the less dense object.

So there are two things contributing to density:

1. 1  The mass of the atoms or molecules that makes up the material.
2. 2  The volume or amount of space the material takes up. If the molecules or atoms are “packed” in more closely, it will be more dense.

Density and buoyancy are closely related. A less dense substance will float on a more dense substance.

So to find out the density of an object we have to find its mass and its volume and make a division, as shonw in this video :

Reports

Whenever we finish our practices we must complete our reports and get conclusions of our experiences. In every report we have to fill the introduction and we must watch videos or look for some information through the internet with our ipads. As well as, we have to answer some questions and draw a picture of our practice.

We also prepare an imovie or a keynote to show you in our blog.

This is a hard work, as you can see!!

INTRODUCTIONS

And here you are the other members of our teams:

GOODBYE BECCA

Today is the last day of our linguistic auxiliar, Becca

It's been a real pleasure to share this time with her in Laboratory. Always helping us to improve our english and with our laboratory duties.

We'll miss you a lot!

Separation of Mixtures

Once we have the mixtures ready we are going to separate their components using the properties of matter.

                               

       

Observing Drosophila melanogaster

This week we have observed a particular specie of flyes through the binocular loupe.

We have been able to distinguish male and female flies and we are going to show you with this presentation.

Observing Drosophilas from maisanjose

Making Mixtures

Heterogeneous Mixtures

COOPERATIVE WORK

In the lab we make collaborative projects, we work in groups of 3 or 4 people and we have different roles, students may be assigned to only one role or a combination of roles during a activity.

Leader/manager/organizer: Manages the group and ensures that members fulfill their roles in a timely manner.
Recorder: Records group’s answers and discussion outcomes.
Materials manager: Collects materials for the group and performs technical information analysis.

Reflector: Observes and notes the group dynamics for better future group functioning.
Time keeper: Keeps the group on-task and within the time limits for the activity.
Encourager/coach: Ensures that all members are participating.
Reader:Reads the instruction or any information orally to the group.
Reporter/spokesperson: Reports the groups’ conclusions to the whole class.
Checker: Checks group members to ensure that each member can explicitly explain how the conclusion/solutions were derived.

Today we will introduce the leaders of the different teams:

LABORATORY 2015-2016

OBJECTIVES:

   - To improve the practice of using the scientific deductive method for meaningful learning.
   - To improve the standard of English of our students.

 ORGANISATION:

   - Work in groups of three people in the laboratory.
   - Promote the learning of concepts, materials and procedures in English.
   - Conducte practice accurately valuing teamwork
   - Give a complete report of each practice and research
   - Rating with grade sheet.
  
 RULES FOR THE LABORATORY  

   - Wear a lab coat
   - Case material( dissecting forceps, scissors, magnifying glass, cutters, etc...)
   - Hair pulled back
   - Carry out the cleaning and care of the laboratory equipment.
   - Appropiate behaviour.

Electrolysis of water

Energy is stored in the bonds of molecules. When these bonds split apart, the energy released can be used to do work. Breaking apart liquid water molecules into hydrogen and oxygen gas creates an enormous amount of energy, which can be turned into useful electricity to power our homes and cars. To break these bonds, some amount of energy is required to get the atoms in water molecules active enough to break apart from each other. At home, we can supply this energy with a battery. All batteries have two terminals, or ends: a positive terminal and a negative terminal. The water then connects these terminals, so energy can flow between them. As the electricity passes through the water, it splits the water! Pure water itself is not a good conductor of electricity, so for this experiment baking soda will be added to make the solution an electrolyte. An electrolyte is a part of a solution that can be broken up by electrolysis. Electro refers to energy and electricity and -lysis refers to splitting apart. Electrolytes are important both in batteries and in our bodies.

                 Sequence about an egg into the botle

 This is your report.

Egg into the botle

Atmospheric Pressure II

Here we go with another atmospheric pressure experiment!

Atmospheric Pressure experiments

Amazing experiment showing  the effect of the air pressure by  putting a glass filled of water upside down.

Guess what happens!!

Crystallisation

Making Christmas crystals trees