The Benedict's Test

Testing for Simple Sugars  (Benedict's Test)

Aim

I want to find out how to test for simple sugars.

Simple sugars are carbohydrates that are quickly absorbed by the body to produce energy. They are also classified as “simple” because they contain only one or two units of sugar or saccharides. Also referred to as simple carbohydrates, these sugars are found naturally in a variety of foods that we consume daily.

www.livestrong.com

Equipment

• Safety glasses
• Bunsen burner
• Test tubes
• Test tube tongs
• Benedict's Solution
• Glucose powder (dextrose)

Method

1. Place about 2mL of the dextrose into a test tube and then add 5 drops of Benedict's solution and 5ml of water
2. Gently heat the test tube over a blue flame.  DO NOT BOIL!

Results

A positive test for simple sugar results in Benedict's Solution changing from a blue colour to a green colour to an orange colour.

Conclusion

In conclusion, we learnt that by mixing certain chemicals, which are simple sugars like glucose powder(Dextrose), Benedict's solution and water then heated; it would create a chemical reaction which would turn the normally blue solution into an orange like liquid.

Extra for experts

Two different types of sugar exist: simple and complex. Complex sugar takes longer for your body to break down and is healthier for your body. This type is found in natural carbohydrates such as whole grains and fruit. On the other hand, simple sugar is broken down by your body quickly and causes energy ups and downs. This type of sugar includes refined and processed sugar found in table sugar and added to many sweets. Consuming an excess of simple sugar comes with numerous h.ealth problems

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• Give two examples of simple sugars and complex sugars in your daily food: Table sugar and fruit juice for simple sugars; peas and beans for complex sugars.

• At what times of the day may you need simple sugars? It is said that it would be best to eat sugars/carbs in the morning/during playing sports or during exercise. So that during the rest of the day it would burn off and would also burn fat as well.

• Do you think that it would be wise to eat simple sugars before bed? Why/why not? The decision of eating food with sugar isn't the best idea, one of which reasons is,

it would affect your sleep and would also affect your blood sugar, which could risk you having

diabetic issues later on in life.

GPS Teleporter

This term in Kete we have been learning about business and enterprise. This week we started to learn how companies let people know about their product, either object or food. After we've learnt that we started to make a video of our own product chosen by our teacher. Our product is the GPS Teleporter, it's basically Tardis from Dr Who. The main purpose of it is that you can use it to teleport anywhere you want. Here is our ad.

Science Equipments!

Today in science we recapped the uses of some science equipment that we will be using this term. We had to match the name, the picture and the use of the equipment. Here are the 12 different tools that we will be using this term.

Beaker

A Beaker is used for holding a liquid.

Measuring Cylinder

A Measuring Cylinder is used to measure volumes of liquids.

Test Tube Tongs

Test tube tongs are used to hold test tubes.

Spatula

A Spatula is used for scooping powders.

Stirring Rod

A Stirring Rod is used for stirring chemicals.

Dimple Tray

A Dimple tray is used for watching (observing) chemicals change.

Conical Flask

A Conical Flask is used for mixing liquids.

Thermometer

A Thermometer is used for measuring the temperature of a liquid.

Tripod

A Tripod is used for holding a beaker/flask above a flame.

Bunsen Burner

A Bunsen Burner is used for heating experiments.

Scissor Tongs

Scissor Tongs are used for holding hot objects.

Gauze Mat

A Gauze Mat is mat is used to evenly spread a flame under a beaker.

Heat Mat

A Heat mat is mat protects the bench from burning.

What respecting belief and religion looks like at HHS?

This term, in Philosophy we've been looking at respect and it's value to the world and to HHS. Vann and I focused on Respect towards beliefs and religions.
It is important to respect each other, it keeps and binds the world together. Respect is the base and the most important within the values of HHS. Without respect, it would be impossible to love each other, and without it, fight and malevolence will take over. That's why we need to treasure and use that value always to keep the world intact and be kept to the way it is now.

How do we attract more people to look into your blog?

My question is: How do we attract more people to look into your blog? 

Answer: Make your blog more entertaining, perhaps you could create contents that are more relative to people or make your content easier to understand. Another is that you could share your blog with more people, share with your family and friends or post a link of it in a social media site and just let people know about your posts. Also, you could blog regularly and make your content visible to search engines as well.

(Courtesy:Wordpress.com)
(Image: Pagez.com)

Is that lava?!

Blobs in a Bottle         

Resources:

• A clean 1-litre clear soft drink bottle

• 3/4 cup of water                   

• Vegetable oil

• Antacid tablets (such as Quick-Eze or Mylanta)

• Food colouring

Procedure:

1. Pour the water into the bottle.
2. Use a measuring cup to slowly pour the vegetable oil into the bottle until it’s almost full. You may have to wait a few minutes for the oil and water to separate.
3. Add 10 drops of food colouring to the bottle; the drops will pass through the oil and then mix with the water below.
4. Break an antacid tablet in half and drop it into the bottle. Watch it sink to the bottom and watch the lava start to flow.
5. To keep the effect going, just add another piece of antacid tablet.

Big questions:

1. Does the temperature of the water affect the reaction? Yes, if for example, the water is much hotter the tables will dissolve much, much faster.
2. Does the effect still work if the cap is put on the bottle? Yes.
3. Does the size of the tablet pieces affect the number of blobs created? If the tablet is broken up into more smaller pieces they would be easier to dissolve than the ones that are now broken up.
4. What is an oil spill and how do they happen? Oil spill is when liquid petroleum hydrocarbon is spilled into parts of water. The most common and main causes of this are  tankers, barges, pipelines, refineries, drilling rigs, and storage facilities.
5. How do ice and water interact during an oil spill?  Oil booms are hindered by pack ice; the oil may be frozen and captured in growing ice or spread below a solid ice sheet.
6. How does oil affect marine life during an oil spill?One of the reasons it's bad is because it contaminates the sea mammals food supply which in a long period of time would cause them to die.

Scientific Explanation (How it works):

The reaction of water and oil separating is caused by the density of both liquids. The oil is less dense than water; also the molecules of the water are more attracted to each other than it is of the oil and so it makes that reaction. When the tablet is dropped on the mixture, it will pass through the oil and into the water dissolving it in the process, creating gas which would try and escape to the atmosphere creating bubbles that would interfere with the food colouring creating the lava like effect.