Thursday, 3 July 2014

Going green as we clean: Are 'Green' Detergents Less Toxic Than Conventional Detergents?

Going Green As We Clean

www.sciencebuddies.org/science-fair-projects/project_ideas/EnvSci_p053.shtml#background

What are some of the harmful chemical that can be found in conventional detergent?Most of the detergents contain cancer causing chemicals that is not required to be labelled. Not only it is harmful for the body, it can also contaminate the waterways and do great damage to the environment and the marine lives.


What are the dangers that we face from having harmful chemicals in conventional detergent?

Impact to marine lifeAlkylphenol Ethoxylates (APE) can be found in cleaning products, hair dyes and other haircare products. Most common APE is nonylphenol ethoxylates. When this chemical enters the waters through sewage leading to the sea, it can alter the survival rate, feminisation and hermaphrodism ( having both genitals) for salmon and other fishes.
Impact to humansNonylpheonol ethoxylates can accumulate in blood and body tissues. This can cause breast cancer and generally harmful for humans

How do we know our detergent is not harmful to the environment too?

( focused on preventing harm to marine life)Since acidity can affect the Environment of marine life, we must make sure that it is not too acidic or too alkalie. To make sure that chemical components are not harmful, we can only use organic ingredients to make the detergent

Wednesday, 2 July 2014

Research Question Generation

Investigating the 'Mpemba Effect': Can Hot Water Freeze Faster than Cold Water?

Link to question

What is the project about?
The goal of this project is to investigate the question, "Can hot water freeze faster than cold water?" Thorough background research, a precise formulation of the hypothesis, and careful experimental design are especially important for the success of this experiment.

Where do we conduct the experiment?
At home or in school under a constant environment and temperature so as to not effect the results.

When do we conduct the experiment?
When we have come up with a plan on how to do the experiment and we have all the equipment needed.

Why does the 'Mpemba Effect' occur?
Hot water cools faster because of the bigger difference in temperature between the water and the freezer, and this helps it reach its freezing point before the cold water reaches its natural freezing point, which is at least 5°C lower.

Which freezes faster according the the 'Mpemba Effect'?
Hot water.

How do we conduct the experiment?
We have to put 2 cups of water, hot and cold respectively,  in the freezer and see which freezes faster.

Tuesday, 1 July 2014

Project Recommendation: Investigation of the amount of Vitamin C in different fruits

Investigation of the amount of Vitamin C in different fruits



1.1
The idea of this project is to find out the amount of vitamin C a fruit contains and compare amongst the fruits. 

1.2 
What is the use of Vitamin C?
Our body needs vitamin C to repair damaged tissues in all parts of the body.

1.3
When should we consume fruits enriched with vitamin C?
We should consume electrolytes as our body does not have the ability to restore the lost electrolyte as rapidly as they were lost.

1.4
Why should we consume Vitamin C?
When we exercise, we lose electrolytes and thus need to replace them with fresh brand new natural organic ones. This prevents dehydration and can save our lives. If our consumption of necessary electrolytes is wrong, there can be health consequences. 

1.5
Where can Vitamin C be found?
They can be found in many of nature's products, for example fresh fruits and vegetables. There are also man made alternatives such as some carbonated, isotonic and sports drinks. 

1.6
How do we replenish the amount of Vitamin C in our bodies?
When we consume food or drink that contain electrolyte, our body breaks it down similar to salt and sugar, and is inducted into our bloodstream through the digestive system.