States of Matter
What are the 3 main states of matter?
Solid, liquid, gas
How do you know if something will float?
If it’s less dense than water
Why can water bugs walk on water
Surface tension
Is boiling water a chemical or physical change?
Physical
2013
Solid
Is saltwater or freshwater more dense
Saltwater
What is the principle which relates buoyancy and water displaced?
The force of buoyancy is equal to the weight of water that is displaced
List 3 clues of a chemical change
Bubbles
Color change
Odor change
Change in temperature
Who composed the score for many famous cinematic franchises including Harry Potter and Star Wars?
John Williams
Define viscosity
The measure of how thick a liquid is; consistency
What is the formula for density?
Mass divided by volume
What is the force that holds water molecules together?
Cohesion
Can a physical change be easily reversed?
Yes
Who played Elizabeth Schuyler in the Broadway musical Hamilton?
Phillipa Soo
What are the properties of a non Newtonian fluid and why are they like this
A non Newtonian fluid has the properties of both a solid and a liquid becausei its viscosity changes depending on pressure
Find the density of a 60g object with a volume of 12cm^3
5g/cm^3
Why does buoyancy exist?
Pressure becomes greater as water depth increases and greater pressure spreads upwards, which creates an upward force.
Are ice packs endothermic or exothermic reactions?
Endothermic
Name 4 of the 5 members of the 2012 US Olympic gymnastics team known as the Fierce Five
Aly Raisman
Gabby Douglas
Kyla Ross
Jordan Weiber
McKayla Maroney
What are the 2 other states of matter
Plasma and Bose-Einstein condensate
What is the density of water?
1g/cm^3
Who is the principle of buoyancy named after?
Archimedes
Name an example of a decomposition reaction
Water to hydrogen and oxygen
Salt to sodium and chlorine
How many daughter cells are produced in mitosis?
2