Science Experiments
Welcome to the Science entry of this Final Project Blog! 馃槑
In this entry we're going to detail several experiments related to this term's topics, such as: Changes in the state of matter, Pure substances and mixtures, Solutions, Methods to separate mixtures, chemical reactions, among others. You can redact the experiments as follows:
1. Topic:
2. Group:
3. Materials:
4. Procedure (Step-by-step):
5. Was the experiment done?: Yes/No
6. Explanation of the topic (What does this experiment demonstrate? Talking about SCIENCE, the topic has to be explained through the experiment):
Evidences:
Joshua Fl贸rez & Manuel Urbaez - Method to separate mixtures: Filtration
Enrique Calder贸n & Juan Sebasti谩n G贸mez
Anasof铆a & Isabel:
Topic:Water Purifying Filter
ResponderBorrarGroup:Joshua and Manuel
Materials:
1. A plastic bottle.
2. Fine sand.
3. Gravel.
4. Activated carbon.
5. Cotton or cloth.
6. Containers to collect filtered water.
Step by step:
1. We have to wash and strain the soil and gravel.
2. When the soil is fine and becomes fine sand, we pour it into a plate and wash it with the gravel and when it is clean we put it in a container.
3. From the soil come medium stones, large stones and small stones, we put them in plates.
4. Then we look for activated carbon and crush it with a hammer until it is in small pieces.
5. Then we wash it and let it dry for 24 hours after 24 hours we pour them into a plate.
6. Cut the top off of a plastic bottle.
7. The top will be used as a funnel for the filter.
8. Place a layer of cotton or cloth at the bottom of the funnel.
9. Add a layer of activated carbon on top of the cotton.
10. Place a layer of fine sand, which will trap small particles.
11. On top of the sand, add a layer of gravel, which will stop larger particles.
12. Finally, pour dirty water through the filter.
Was the experiment performed?: Yes, the experiment was performed.
This experiment shows that water can be purified with household materials that are inexpensive, low-cost, and easy to obtain.
Great! You did an amazing job. Although, the explanation of the topic is missing, try answering these questions: What is a mixture? How can we separate mixtures? What is filtration? Did your demonstration worked, was the mixture separated?
BorrarA mixture is formed by any combination of different elements when its parts are divisible it is heterogeneous
BorrarSeparating mixtures can be done using various techniques depending on the nature of the components in the mixture, this are some of the common methods to separate a mixture.Filtration,Evaporation,Centrifugation,Chromatography,Magnetism,Sieving,Extraction,Floatation.
Filtration is a process used to separate solid particles from a liquid or gas by passing the mixture through a filter.
our demostration worked
the mixture was separated
1. Topic: Evaporation in house - Separation homogeneous mixtures
ResponderBorrar2. Group: Diego Mejia Fuentes - Luis Orozco Diaz
3. Materials:
1 glass of water
salt
spoon
frying pan
stove
4. Procedure (Step-by-step):
1. We mix 5 tablespoons of salt in the glass of water.
2. We light the stove with the help of a responsible adult.
3. We place the pan on the stove
4. We pour the water mixture with salt.
5. Let it boil for approximately 10 min.
5. Was the experiment done?: Yes/No
Yes, we did
6. Explanation of the topic (What does this experiment demonstrate?):
After 10 minutes we can see that the water evaporates and salt residue remains in the pan, we can see that the separation of a homogeneous mixture goes through the evaporation process.
Excellent, the entry is missing the explanation of the topic. Guiding questions: What is evaporation? How does evaporation separates your mixture?
ResponderBorrarWhen we heat a liquid, like water, it turns into vapor, and this is called evaporation. In the experiment we did, we heated water with salt in a pan, and after a while, the water started to evaporate, slowly disappearing as vapor, while the salt remained in the pan.
BorrarEvaporation allows us to separate this mixture because, at first, the water and salt were completely mixed. But when the water evaporates due to the heat, the salt, which cannot turn into vapor, stays as a solid residue. This experiment shows how evaporation is a good way to separate the components of a mixture when one of them, like water, can evaporate, and the other, like salt, cannot.
Subject: Method of separation of mixtures: Filtration
ResponderBorrarGroup: Juan Sebastian Gomez Ocampo y Enrique Calder贸n Fuentes
Materials:
Water
Salt
Sand
Filter paper
Containers
Procedure: Step by step
1- In a container we mix water with sand
2- In an empty container, put the filter paper and add the mixture of sand and water through the paper.
3- In another container, add salt to half a glass of water and dissolve it.
4- Now, in another empty container we put the filter paper and add the mixture of water and salt.
Was the experiment done?: Yes, we do this.
Explanation of the topic:
The mixture of water and sand is heterogeneous, for this reason, when we add this mixture through the filter paper the sand stays on the paper and the water passes to the bottom of the empty container, that is, the elements are separated.
On the contrary, the mixture of water and salt is homogeneous, for this reason the elements are not separated through the filter paper and both pass to the bottom of the container.
Subject: Changes in matter: Non-Newtonian liquid
ResponderBorrarGroup: Luisa Arias - Miranda Montenegro
Materials:
Water - Maizena - 1 container
(Optional spoon)
(Color optional)
Procedure:
1. Place the cornstarch in the bowl: Start with a cup of cornstarch.
2. Add water little by little: Add half a cup of water slowly while mixing with the spoon or your hands.
3. Mix well: Keep adding water until you have a mixture that looks liquid, but feels hard when touched or tapped.
3. Adjust the texture: if it is too liquid, add more cornstarch; If it is very hard, add a little more water.
Was the experiment carried out?: Yes
Explanation of the topic:
Changes of matter occur due to variations in temperature, pressure or energy, and include state transformations, shape alterations and chemical modifications, depending on how atoms and molecules interact
Steps to Follow:
ResponderBorrarDraw the Water Cycle:
With the permanent marker, draw the elements of the water cycle on the Ziploc bag: the sun, clouds, the sea or a river, and raindrops. This will help visualize each stage of the cycle.
Fill the Bag with Water:
Fill the bag with a small amount of water, approximately up to where you drew the sea or river. If you want, you can add a few drops of food coloring to make the water more visible.
Seal the Bag:
Seal the Ziploc bag tightly to prevent water from spilling. Make sure it is completely sealed.
Place the Bag in a Sunny Window:
Use the masking tape to stick the bag to a window where it will receive direct sunlight. The sunlight will heat the water inside the bag.
Observe the Process:
Over time, the water inside the bag will begin to evaporate due to the heat of the sun. The water vapor will rise and condense at the top of the bag, forming small droplets that simulate clouds.
As more vapor condenses, the water droplets will get larger and eventually fall back to the bottom of the bag, simulating rain.
Explanation of the Water Cycle:
Evaporation:
The heat of the sun causes the water in the bag to evaporate, transforming from liquid into water vapor.
Condensation:
The water vapor rises and cools as it touches the top of the bag, turning back into liquid and forming water droplets, similar to clouds in the sky.
Precipitation:
When the water droplets at the top of the bag become large enough, they fall back to the bottom of the bag, simulating rain.
Harvest:
The water that falls to the bottom of the bag represents the water that accumulates in rivers, lakes and oceans, thus completing the cycle.
Topic: States of matter
ResponderBorrarGroup: Santiago Posada Salas-Jer贸nimo Gil
Materials: water
a pot
an stove or fire
a cooler
a water cup
Procedure: We fill the pot whit water then we put the pot in fire or in a stove in 10-15 min
we can observe that the water is releasing steam because the water gets to the boiling point thats the gaseous state then if we put the water in a cooler during 2-3 hours we can observe that the water gets turned into ice because the freezing point this is the solid state, finally we can see if we put the ice in outside the ice turns into water again and this is the liquid state.
Was the experiment done: yes we do it
What does this experiment demostrate? It demostrate that the matter has 3 states solid, liquid, and gas and all matter can be transformed in this three states.
The states of matter can be explained as a change of the spaces into one molecule and another molecule, when the water was heated the molecules of the water separated until the water tranforms into steam and when the steam cools tranforms into water, when we cool water the water tranforms into ice and when we heat the ice tranforms into water.
Topic: Chemical Reactions
ResponderBorrarGroup: Samuel L贸pez & Math铆as Ram铆rez
Materials:
1. An empty plastic bottle
2. Vinegar
3. Bicarbonate sodium
4. A balloon
Procedure:
1. Pour a cup of vinegar inside the bottle.
2. Pour a spoonful of bicarbonate sodium in the vinegar
3. Quickly seal the bottle cap with the balloon
4. The balloon should inflate due to the gas produced by the reaction.
Explanation: Bicarbonate sodium reacts with the vinegar, and generates gas. This is caused by the breaking and forming of bonds between atoms.
We made the experiment in the classroom.
1. Topic: HOMOGENEOUS AND HETEROGENEOUS MIXTURES
ResponderBorrar2. Group: Gabriela Orozco – Rafael O帽ate
3. Materials: Ginger, sugar, dehydrated coconut, one egg, cinnamon, coconut oil, baking power, vanilla essence, nutmeg, yogurt, oatmeal and cups.
4. Procedure (Step-by-step):
HOMOGENEOUS MIXTURE
STEP 1: Pour oatmeal plakes into 2 cups.
STEP 2: Then take a processor and turn it into flour.
STEP 3: Add tothe flour a teaspoon of baking power, a tablespoon of cinnamon to the flour.
STEP 4: In another cup we mix 1 egg with half a cup of sugar with a tablespoon of vanilla essence, 1 quater cup of coconut oil.
STEP 5: Integrate dry and wet ingredients, integrating them with a spatula and finally add the grated coconut.
STEP 6: Finally, place the mixture in a mold to bake in the air fryer for 10 minutes.
5. Was the experiment done?: Yes
6. Explanation of the topic: During preparation (homogeneous mixture) When you mix the cake ingredients (oat flour, sugar, egg, coconut oil, etc.), you usually get a homogeneous mixture. This means that the ingredients are combined in a way that you cannot distinguish each one separately and the mixture has a uniform composition throughout. The dough is a homogeneous mixture because the ingredients are well integrated and there are no visible parts of individual ingredients.
HETEROGENEOUS MIXTURES
3. Materials: watermelon, green apple, red apple, banana, yogurt.
4. Procedure (Step-by-step):
STEP 1: Wash the fruit and chop it into cubes.
STEP 2: Mix the fruit in a large glass bowl.
STEP 3: Add the yogurt dressing to the fruit salad.
STEP 4: Serve and enjoy.
5. Was the experiment done?: Yes
6. Explanation of the topic: Fruit salad is a heterogeneous mixture because it is composed of different types of fruits that maintain their individual properties and are not completely mixed. In a heterogeneous mixture, the components are visible and distinguishable from each other, which means that each type of fruit in the salad retains its distinct shape, color and texture.