Diet Coke and Mentos

The mini project i decided to do was the soda explosion this is an easy experiment that you can do at home...it can also be a mean trick on someone.

What you need:

1. 2 liters of soda (diet works better)

2. 1 roll of mentos

3. paper tube if u want to drop the mentos in perfectly

Cautions:

~ this experiment is very messy so don't do it indoors

First you need a flat surface that can become dirty. Undo the soda cap, unwrap your mentos, paper tube is placed for mentos to slide into soda bottle. Let the mentos slide into the soda and BAMMMM you will get to see an explosion of soda.

Science involved:

So you may be wondering what science is involved in this soda volcano well because thementos and the soda have CO2 and other ingredients when the two mix a chemical reaction occurs.

Layered Drink

For my mini project I have made a density column.You will see how an objects density affects where it stays in the glass, and doesn't mix with the other liquids.

This is the list of liquids i used while making this experiment
1. syrup
2. dish wash soap
3. water
4. vegetable oil
note: you don't need to stop at these 4 liquids you can add others!!!

First off I took the syrup and poured it in the center of the cup, you probably want to pour the syrup in the center of the cup because it is sticky and if it hits the sides your layers wont come out as neat.Next i added the dish washing soap you have to becarefull when pouring the next liquids because you don't want to pour it in the center because it might crack the layer of the liquid and cause the two liquids to mix.Then i added the rest of my liquids in the same cautious process.

Cautions:

• don't mix the liquids while pouring
• pour slowly
• don't bump the glass
• if you use water you may want to dye it with color

Science:

This project shows you how the object with the heaviest density (mass per unit volume) goes to the bottom of the glass and the less heavy objects stay toward the top of the glass. The reason why the liquids did not mix is because they repel each other and some are just to thick to mix with each other.

Chem standard f what is the difference between a hypothesis and a theory

What is a hypothesis

a hypothesis is a proposal or guess to what will happen in an experiment and can be tested to see if true.

to make a hypothesis you need a if...then ... statment.

What is a theory

A theory is a statment made after the observations have been made and the hypothesis has been tested mulitple times and has been proven true.

So a hypothesis can be what you think will happen in an experiment and a theory is your hypothesis that was proven true it is what did happen in the experiment. The hypothesis and the theory work hand in hand you cant have one without the other you need to first make a hypothesis then prove it true to have a theory. You also need to run multiple test to ensure that no errors were made.

Mills Canyon Map

Last thursday we went on a field trip to Mills Canyon .... it took forever to get there it was all up hill and it was so hot. Even though it was hecka slippery and hot and crazy, it was fun in a weird way like it was fun to be out hiking with your friends and to see people fall. I hated that it was so slippery and muddy but that is what kinda made it feel more outdoorsy. Though this field trip was kinda weird it was weird but it a good way i guess i kinda liked it... okay okay i liked it because i got to see someone fall they got so dirty it was hillarious.



View Mills Canyon field trip! in a larger map


this is the route we took

Water in cup...upsidedown!

For my mini project i decided to defy gravity with a cool chemistry trick. In this chemistry trick you fill a cup of water you put a piece of cardboard on the bottom then you flip it and the cardboard should stay in place with the water still in the cup. Sounds cool huh well this is what you will need to try this trick out for yourself.

Materials needed:

~ you need a glass of water filled to the top
~ A piece of cardboard, big enough to cover the entire lid of the cup





How to do this trick:
1. You wil need to fill the cup with water to the top
2. You place the piece of cardboard over the rim of the cup
3. make sure no air bublles are in the cup
4. hold the cardboard to the cup sturdily
5.flip the cup upside down
6. remove your hand quickly from the cardboard
Science:
Early I said that this was a chemistry trick the reason why this is a chemistry trick is becuase it shows difference in air pressure. This trick would not be possible with out the difference of air pressure in the cup and the air pressure outside the cup. The reason why the cardboard is able to stay in place while the water in the cup is pushing down on it is because the air pressure out side the cup is higher than the air pressure inside the cup.

Photo credits: Nicole Ho :)