Density

What is density? Density- the amount of mass for each cm^3 (or mL) of a substance. Density=mass/volume

What is density? When an object is placed in a fluid, gravity pulls the object down. In order for the object to go down (sink), the fluid must move out of the way.

Boat Challenge Group –Edwards HR Paperclips BROCK & THOMAS 76 HUGO and HUDSON 194 Wandle n gonzalo 75 Liz/jordan 44 Kylie/Zahyreia 113 Olivia and Hannah 114 Amanda and Nevaeh 348 Tremelle and jason 338 Gavin And Andre 94 Andrew and jacob 88 Kayla and anndrea 355 Group – Boswell’s HR Paperclips Janiya and Reagan 210 Precious and Taylor 131 Alex and Markel 40 Kya and Maddox 170 Anna Grace and Martin 136 Patrick and Ashley 112 Harley & JC 254 Judah and Brad 53

Lab: Density Towers Where do you predict the liquids will be located? Label in your notebook 1-9 with 1 being the top and 9 being the bottom. Honey dish soap Water corn syrup maple syrup vegetable oil rubbing alcohol Milk lamp oil

Lab: Density Towers Write the correct order of the liquids. Where do you think that the items will land? Metal nut or bolt Popcorn kernel Board game Die Plastic bead Soda cap Ping pong ball

Lab: Density Towers Answer this question in your science notebook: What makes some objects sink deeper into the column while some hardly sink at all?

What is density? If the fluid was more dense then the object, the object would stop sinking and would float. Buoyancy- is the resistance to sinking. This is when the fluid that is being pushed out of the way pushes back on the object.

What is density? Buoyancy depends on density. So if you change the mass or volume of an object, you can change whether or not it will float. Many fluids also have a property called surface tension.

What is density? Surface tension- a property of a liquid caused by intermolecular forces near the surface leading to the apparent presence of a surface film.

Water drops on a coin A B C Penny Nickel Dime Quarter

Water drops on a coin Which coin held the most water? Why? Why does a dome form when you drop water on the coin? Why does the dome eventually collapse?

Water and Paperclips How many paper clips can you put in the cup before it spills? Begin dropping paperclips one at a time into the cup once you have the teachers approval. How many paper clips were you able to put in the cup? Name three observations:

Science Notebook

Lava Lamps Explain the steps in detail List 3 observations Why are bubbles formed? What happens?