3B : Science experiments

1.       Why is this experience or invention useful? What is its usefulness? This experience enables to demonstrate the air pressure. It also proves that the air has a mass. It is useful because that’s an easy and fun way to show a thing often unknown and so breaks prejudice like the idea that the air doesn’t weigh. This discovery and now properties have usefulness in all the things having a relation with the air and more precisely flying. Indeed, in the aerospace, the aeronautic, that is very important for some calculations, trajectories. . . And if there is a mistake, it would be very dangerous for the life of the people and the object. And finally, the air pressure is the thing to be studded to make an object fly. 2.       What are the materials or products used? For this experience, we have just needed a ground support, here a table, a newspaper, and a wood plank or ruler which will be broken at the end of the experiment. 3.       What do you have to do to achieve the expe

1-Why is   this experience or invention useful ? What is its usefulness? To have the hand on fire 2-What are the materials or products used? Soap hand and fire 3- What do you have to do to achieve the experience? Obtain the necessary equipment. Put soap on fire and place on hand. 4- What are the various difficulties met to achieve the experiment? Do not get burned with the lighter 5- In which fields can we use this experiment? ( Industry, medical field, sports field, environment, everyday life…). We can use this experiment for special effects in movies 6- Can you describe precisely the different steps to achieve the experience or the invention? You must obtain soap and place it on a smooth table and put it on fire. Take the burning soap in these hands and you will see that it does not burn you   7- Can you justify your choice and say why it appealed to you Because I like this experience and fire.

1 Why is this experience or invention usefull? What is the usefulness? It’s good for decoration and activities 2 What are the materials or products used? Some water, jars, plastic cards, and food color 3 What do you have to do to achieve the experience? You must be calm 4 What are the various difficulties met to achieve the experiment? There are no difficulties 5 In which fields can use this experiment? When you are boring 6 Explain the reasons why you chose this experiment and why it appealed to you? We chose this experiment because it’s very cool and funny it’s good to past some times To this experience you need a jar of hot water, a jar of cold water, a red dye food and a blue dye food. A plastic card and a dish. The first step is to put the red food dye on the hot water and put the blue food dye into cold water.

1-Why is this experience or invention useful? What is its usefulness? The useful of this experience it’s to do an egg which bounces and to amuse us. In more the egg can also shine If we put it on a light. 2-What are the materials or products   used? The materials or products used are an egg, vinegar, ice water and a cup. 3-What do you have to do to achieve the experience? Firstly we put the egg in the cup carefully and fill it with vinegar to cover the egg completely. Then we let it is 24 hours. After the 24 hours we take our egg and will notice and clean the egg. Finally the egg is turning into a bouncy egg. 4- what are the various difficulties met to achieve the experience or the invention? The difficult is we are not sure that the result is correct. 5- In which fields can we use this experiment? (Industry, medical field, sports field, environment, everyday life…) We can use this experience every day to have fun with the children. The experiment is easy to perform

1-Why is   this experience or invention useful ? What is its usefulness? This experiment serves has to make some light as a small night light. 2-What are the materials or products used? There are black lights, highlighters water, Tweezers, funnel, measguring cup, pliers 3- What do you have to do to achieve the experience? Can you describe precisely the different steps to achieve the experience or the invention?   Number 1: Prepare the right ingredients. Number 2: Put water In the middle of the bottle with this funnel. Then Remove the cartridge of the packaging of the fluorescent and put him in the bottle. Wait one hour minimum. Then remove cartridges. And put bottles in the black. 4- What are the various difficulties met to achieve the experiment? Pay attention not to put the fluorescent wherever, and especially not in the mouth! Secondly it is important to make this experience by respecting safety and rules. 5- In which fields can we use this experiment? (Industry,

1-Why is this experience or invention useful ? What is its usefulness? -          We chose this video because it the future to improve the expansion of the arm for the humain . 2-What are the materials or products used? -          The material to our experience are in carton and straw. 3a- What do you have to do to achieve the experience? -          .We have to do this by our – self but we have too do with precaution 3b-Can you describe precisely the different steps to achieve the experience or the inventtion? -          The different steps are firstly to cut a piece of carton as our hands and   different pieces of straw like the model and secondly you have to glue them on the hand in carton afterward we have to do went Make the thread in the straws and to attach it to our fingers. Now the products final is finish. 4- What are the various difficulties met to achieve the experiment? -          It can be difficulte to find the materials 5 - In which fields can we us

1- Why is   this experience or invention useful ? What is its usefulness? This experience shows that you must be careful when we blend 2 cleaning products or 2 everyday life products together. For example Potassium, Hydrogen or Liquid Soap. 2- What are the materials or products used? The materials or products used in this experience are -Water -Potassium permanganate -Liquid soap -Hydrogen peroxide. 3- What do you have to do to achieve the experience? Can you describe precisely the different steps to achieve the experience or the invention? The different steps for to achieve the experience are : Add to a cup liquid soap, then, add Potassium (colorant alimentaire), then, add water. Finally add sodium solution. 4- What are the various difficulties met to achieve the experiment? The difficulties are to find these products. And we must be careful. 5 - In which fields can we use this experiment? ( Industry, medical field, sports field, environment, everyday life…).

1 -Why is   this experience or invention useful ? What is its usefulness? This experience useful to show than different products can be heterogenous despite which are liquid. 2-What are the materials or products used? The products used are dish soap, food coloring shake with water, vegetable oil, milk, alcohol and syrup. He use four glass, one funnel and one spoon. 3- What do you have to do to achieve the experience?Can you describe precisely the different steps to achieve the experience or the invention? The achieve to do the experience in the first time it must have the adapted products (they are all sticky). First, it pours syrup, then milk, then dishwashing liquid, blue dye mixed with water, vegetable oil and finally the red dye mixed, but this time with alcohol. 4- What are the various difficulties met to achieve the experiment? The difficulties are to dose well, put the different substances in the right order. 5- In which fields can we use this experiment? (Indu

1-     This experience serves in limited the pollution by eliminating the bottles of plastic water.                                                                                                                                2-     We need alginate of sodium, lactate of calcium, some drinking water, 3 bowls and a spoon. 3-       In a first bowl it is necessary to pay 500ml of water, then to add 2grams of alginate of sodium, to mix the whole and what the whole is homogeneous, then let rest the hanging mixture 15 minutes to have no air bubbles. In a second bowl it is necessary to pay 1 liter of water, to add 5 grams of lactate of calcium, to mix until dissolution. In the third bowl pay some drinking water.   With a spoon of osseous to take the liquid of the first bowl then to add it delicately in the second bowl. To stop the reaction to put the balls of water in the last bowl filled with drinking water . 4-     We need to respected quantity and beings delicate for not which bal

1-Why is   this experience or invention useful ? What is its usefulness? This experience is useful for decorate your glasses with ice cubes in a party. 2-What are the materials or products used? -        Shweppes or another drink with quinine -        Black UV lamp(you can find it in a decoration market) 3- What do you have to do to achieve the experience? Can you describe precisely the different steps to achieve the experience or the invention? a)     Pour Shweppes into the ice cubes trays. b)     Put the ice cubes trays into the freezer. c)     Wait a couple hours. d)     Get out the ice cubes of the freezer. e)     Remove the ice cubes to the ice cubes trays and put it in the glasses f)      Take the black UV lamp and hold it above the glasses. It’s magical! The ice cubes are blue! You can use food coloring for another color. 4- What are the various difficulties met to achieve the experiment? The difficulty is to found a black UV lamp in a market and the

1-Why Is this experience or invention useful? What is its usefulness? This experience serves has to save sheets continuation has them. This experience removes what there is above 2-What are the materials or products used? The materials are milk, plate, food coloring agents, coton bud and wash liquid. 3- What do you have to do to achieve the experience? To realize this experience, It is necessary to measure and to be precise. Can you describe precisely the different steps to achieve the experience or the invention? In first one, you put milk in plate. After you pay some food coloring agents in the milk. To end, you had a drop of wash liking with coton bud. 4- What are the various difficulties met to achieve the experiment? We are not sure to succeed immediately. Do not tremble and be very precise on the dosages. 5- In which fields can we use this experiment? (Industry, medical field, sports field, environment, everyday life…). This experience can be used in the architec

1-Why is   this experience or invention useful ? What is its usefulness? This experience is used by florists to color white flowers so that the sale is faster 2-What are the materials or products used? For this experiment we need a flower, dye and a jar 3- What do you have to do to achieve the experience? Can you describe precisely the different steps to achieve the experience or the invention? It is necessary to put a white flower in a jar filled with water then to add the coloring then to wait one hour 4- What are the various difficulties met to achieve the experiment? We have not encountered any difficulties 5- In which fields can we use this experiment? (Industry, medical field, sports field, environment, Everyday life…). We can use this experience at a florist 6- Explain the reasons why you chose this experiment and why it appealed to you? I choose this experience because we did not know that we could color a flower and we found it impressive and the fa

1-Why is   this experience or invention useful? What is its usefulness?   -     This experience is useful in the way that the lava lamp is beautiful and cute for a decoration. 2-What are the materials or products used? -            The products used are a empty water bottle, a bottle of vegetable oil , water , an aspirin tablet and food coloring. 3- What do you have to do to achieve the experience? Can you describe precisely the different steps to achieve the experience or the invention? -          To achieve the experience we absolutely need some food coloring for the decoration. Firstly we verses in our transparent bottle some oil which will fill the three-quarter of the bottle, then we verses some water, we put a few drops of food coloring and finally we broke one and only aspirin tablet that we add in the bottle. 4- What are the various difficulties met to achieve the experiment? -          Find aspirin tablet and food coloring, don’t overthrow the mixture everywhe

1-Why is this experience or invention useful ? What is its usefulness? It’s for test the resistance of the plastic. 2-What are the materials or products used? The materials is one ball and bugs. 3- What do you have to do to achieve the experience? Put the ball on the bugs. Can you describe precisely the different steps to achieve the experience or the invention? You put bugs on the table and you put the ball on the bugs. The ball burst if you push on. 4- What are the various difficulties met to achieve the experiment? It’s dangerous because we can hurt the bugs. 5- In which fields can we use this experiment? (Industry, medical field, sports field, environment, everyday life…). It’s for test the resistance of the plastic. It can test that in industry, for example :   the airbags for the security in the cars. 6- Explain the reasons why you chose this experiment and why it appealed to you? I chose this experience because I’m impressed by this experience. I think