Diet Coke and mentos!

Video: Uhmmm video was lost...

So, In class today we added up diet coke with mentos and it shot out into the air. PRETTTY DARN COOL! hehe. Well materials needed are:

• Diet Coke (Chilled)
• Mentos
• A circular tube that the mentos can fit through

To have this process happen just open a new bottle of diet coke and put the tube on the lip of the diet coke, add mentos and BOOM! Reaction. hahaha

SCIENCE!: The caffeine, potassium benzoate, aspartame, and CO₂ gas contained in the Diet Coke and the gelatin and gum arabic ingredients of the Mentos all contribute to the jet effect

Photo Credit: Judy Hoang but Kayleen Fang's camera

Moving colors

Hmmmmm, Well moving these colors in milk aren't very hard, here are the steps:

• Fill a container of some sort with milk
• Add in any color of food coloring you want
• Add soap and Presto!

SCIENCE: Milk is mostly water but it also contains vitamins, minerals, proteins, and tiny droplets of fat suspended in solution. Fats and proteins are sensitive to changes in the surrounding solution (the milk). When you add soap, the weak chemical bonds that hold the proteins in solution are altered. It's a free for all! The molecules of protein and fat bend, roll, twist, and contort in all directions. The food color molecules are bumped and shoved everywhere, providing an easy way to observe all the invisible activity. At the same time, soap molecules combine to form a micelle, or cluster of soap molecules. These micelles distribute the fat in the milk.

PHOTO CREDIT: Judy Hoang (:

Bending Glass

BENDING GLASS IS AWESOME (:

Materials needed:

• Glass (that isn't too thick)
• An open flame (Bunsen burner! )
• Goggles
• Tongs if needed

SAFETY FIRST, GOGGLES ON!

Bending Glass takes a lot of patience, so when you are bending glass put the part of glass that you want to bend into the open flame, wait for the glass to heat up, you will know when you are able to bend it when you are able to bend it without any strength. DO NOT FORCE THE GLASS TO BEND. Or it will break.

SCIENNNCE! : Glass is a very strong metal, and stronger than most.

Photo credit: Uhhh this photo was randomly taken.. And I don't know who took it. BUT It's from Kayleen Fang's camera.

ChemStd: 4a

Chem standard:

Students know atoms combine to form molecules by sharing electrons to form covalent or metallic bonds or by exchanging electrons to form ionic bonds

Metallic Bonding:

Strong forces of attraction are responsible for the high melting point of most metals.

• The chemical bonding that results from the attraction between metal cations and the surrounding sea of electrons
• Vacant P and D orbitals in metal's outer energy levels overlap, and allow outer electrons to move freely throughout the metal
• Valence electrons do not belong to any one atom

Packing in metals:

Model: Packing uniform, hard spheres to best use available space. This is called closest packing. Each atom has 12 nearest neighbors.

Metal Alloys:

Substitutional Alloy: Some metal atoms replaced by similar size.

Interstitial Alloy: Interstices (holes) in the closest packed metal structure are occupied by small atoms.

Properties of metals:

• Metals are good conductors of heat and electricity.
• Metals are malleable
• Metals are ductile
• Metals have high tensile strength
• Metals have luster