☢ Testing Sugar Experiment ☢

☢ Testing for Simple Sugars  (Benedict's Test) ☢

Rieya and I partnered up on this experiment, I took the photos while she did the experiment.

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
• Food sample

Method

1. Place about 2mL of the food sample 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 a simple sugar result in Benedict's Solution changing from a blue colour to a yellow colour to an orange/red colour.

Conclusion

The colour changed, it didn't boil either which is good, the colour went from blue to orange-ish red colour and it was really cool watching the colour change, it was satisfying!

Science Equipment

Equipment in Science

Today we've learnt about the science equipment we need to use for experiments.

A Heat mat protects the bench from burning.

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

A Measuring Cylinder is used to measure volumes of Liquids.

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

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

A Conical Flask is used for mixing liquids.

Test Tube Tongs are used to hold test tubes.

A Beaker is used for holding a liquid.

Scissor Tongs are used for holding hot objects.

A  Stirring  Rod is used for stirring chemicals.

A  Bunsen Burner is used for heating experiments.

A  Spatula is used for scooping powders.

A  Dimple Tray  is used for watching (observing) chemicals change

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This is How Respecting People in HHS Looks Like

For the past few weeks, we have been working on our DLO about "What Respecting People, Property, Places, and Beliefs Looks Like" Rieya and I partnered up for this DLO, although we didn't think that our DLO was better than we expected, it turned out really great. We had some problems at first but we solved it and fixed it. This DLO is one of the best DLO we've made and we're really happy how it turned out.

Comment down below if you have some, positive, thoughtful and helpful feedbacks.

How can we make a paperclip float?

10/08/18
Friday, Science!

At science, we did an experiment on making a paperclip float, Rieya and I were partners.

Materials:
clean dry paper clips
tissue paper
a bowl of water
pencil with eraser

What do we need to do?

Fill the bowl with water
Try to make the paper clip float…not much luck, huh?
Tear a piece of tissue paper about half the size of a dollar bill
gently drop the tissue flat onto the surface of the water
gently place a dry paper clip flat onto the tissue (try not to touch the water or the tissue)
Use the eraser end of the pencil to carefully poke the tissue (not the paper clip) until the tissue sinks. With some luck, the tissue will sink and leave the paper clip floating!

How does it work?

How is this possible? With a little thing we scientists call SURFACE TENSION. Basically, it means that there is a sort of skin on the surface of the water where the water molecules hold on tight together. If the conditions are right, they can hold tight enough to support your paper clip. The paperclip is not truly floating, it is being held up by the surface tension. Many insects, such as water striders, use this “skin” to walk across the surface of a stream.

Success! It actually worked! At first, I thought that a paperclip would sink because the paperclip is heavier than the water, it did sink but when we put the tissue and put a paper clip on top of it, and it actually floated.  We gently and slowly removed the tissue by pushing it down with a pencil. Instead of using a bowl, we used a beaker instead because we didn't have a bowl. 

1. How many paperclips can the surface tension hold? 

We only used 2 paper clips so the answer is 2

2. Does the shape of the paperclip affect its floating ability?

Maybe because a paper clip is like a circular, oblong  circular and it's preventing the water to make it sink

3. What liquids have the strongest surface tension?

Water

4. Can the surface tension of water be made stronger? (try sprinkling baby powder on the surface)

Maybe we can try this on another experiment because we don't have a baby powder right now

You can make money from blogging?! (My questions about blogs)

On Cybersmart, we are doing a topic about blogs and blogging, we all watched a video about What a Blog is, and now we/I had to do some researches on Google, here are my questions.

Can I make money from blogging?

How to attract people to look at your blogmore?

How to get more comments/How to get more feedbacks?

Lava Lamp Disaster Explosion

In science, we made a lava lamp using vegetable oil (you can use any type of oil), water, food colouring (any colour) and antacid tablets.

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/Steps:

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?
2. Does the effect still work if the cap is put on the bottle?
3. Does the size of the tablet pieces affect the number of blobs created?
4. What is an oil spill and how do they happen?
5. How do ice and water interact during an oil spill?
6. How does oil affect marine life during an oil spill?

Scientific Explanation (How it works):

To begin, the oil stays above the water because the oil is lighter than the water or, more specifically, less dense than water. The oil and water do not mix because of something called “intermolecular polarity.” Molecular polarity basically means that water molecules are attracted to other water molecules. They get along fine, and can loosely bond together (drops.) This is similar to magnets that are attracted to each other. Oil molecules are attracted to other oil molecules. When you added the tablet piece, it sank to the bottom and started dissolving and creating a gas. As the gas bubbles rose, they took some of the coloured water with them. When the blob of water reached the top, the gas escaped and down went the water.