Properties and States of Matter
Name a state of matter.
What is: solid, liquid, gas, plasma, time crystal...
15 cm3 - 1 times 3 times 5.
This is the name for the upwards force on an object from a fluid it is floating in.
What is buoyancy?
This is a large object designed to add volume to a bridge to make it float.
What is a pontoon?
This is Lewis's middle name.
What is David?
Name an example of a property of matter.
Shiny, dense, hard, soft, conducts electricity, fuzzy, etc.
A graduated cylinder reads 10 mL. After putting a marble into it, it reads 16 mL. What is the volume of the marble?
6 mL.
16 mL - 10 mL = 6 mL (by displacement)
This is the density of water (including units!)
What is 1 g/cm3?
This is the definition of mass.
What is the amount of matter inside an object?
This is the name of our new Head of School.
What is Pete Hodge?
This property of matter is calculated using mass / volume.
What is density?
An object has a mass of 30 g and a volume of 6 cm3. What is its density?
5 g/cm3. Density = mass / volume, so 30 / 6 .
This is what is meant by "displacement."
This is the word we invented for "suspension," the act of not floating or sinking.
What is "flinking"?
This is the name of the bridge we studied.
What is the SR 520 bridge or the Evergreen Point Bridge?
This state of matter has fixed volume, but no fixed shape.
What is a liquid?
An object is put into 100 mL of water, and afterwards the water level is 115 mL. It has a mass of 30 g. What is its density, and will it float in water?
2 g/cm3. It will not float, because it is more dense than the density of water (1 g/cm3)
This is a full statement of Archimedes' Principle.
The buoyant force on an object is equal to the weight of the liquid it displaces. If the liquid displaced is equal to its weight, it floats. If it is less, it sinks.
This is the difference between mass and weight.
Mass is always the same - it is the amount of matter inside an object. Measured in grams.
Weight can change - it is the force of gravity on an object. Measured in Newtons.
This is the US state where Lewis was born.
What is Massachusetts?
List the fourth state of matter, which is the most common state of matter in the universe.
What is plasma?
An object has a mass of 67 g. What is the smallest volume it could have and still be able to float in water? Explain why.
67.1 mL or 67.1 cm3. At 67 mL, the density would be 1 g/cm3 and it would flink instead of float.
Use Archimedes' Principle to explain how a bridge made of concrete can float.
The bridge is designed to displace water that is a greater weight than the bridge, keeping it floating! This is typically done using large pontoons that are full of air, and therefore have enough volume to be less dense than the water.
This is the name for the little "smiley face" at the top of water in a graduated cylinder.
What is a meniscus?
What is 1951?