Elements
Light
Electricity
Random Science
Chemical Reactions
100
What is?
Au
Gold
100
What color do you see when all colors of light enter your eye at the same time?
White
100
What are the three things needed to make a battery?
Two metals and an acid/electrolyte
100
A 10lb weight and a 3lb weight are dropped at the same time, which will hit the ground first?
It is a tie!
100
Balance this chemical equation.
3Fe + 2O2 = Fe3O4
200
What element has the atomic number "8"
Oxygen
200
What is the scientific explanation for why grass is green?
Grass absorbs all kinds of light except green. The green light then reflects into your eyes.
200
We measure electrical current in this unit:
Amps
200
Everyone is and everything is made of element, where did all the elements come from?
The center of stars.
200
Chemical Reactions where heat is released are called
exothermic reactions
300
What element is liquid at room temperature?
Bromine or Mercury
300
Snell's law describes how light bends as it enters other materials like water or glass. What is the behavior of light bending called?
Refraction
300
What would happen to the other two light bulbs if you unscrewed the middle one?
The would both stay on/get brighter
300
What happens if you put a balloon in liquid nitrogen?
It sinks to the point of flattening.
300
An chemical reaction where elements combine with oxygen to release heat, co2, and water is
combustion reaction
400
What is?
Co
Cobalt
400
What is a kind of light that we cannot see, but is not harmful to humans?
Radio waves OR
Infrared Waves OR
Microwaves
400
There are two kinds of electric circuits, one where electrons flow from one resistor to another, and one where electrons can choose which resistor to flow into. What is the name for these two kinds of circuits?
Series and Parallel
400
What would happen to the sun if you tried to put it our with a sun sized bucket of water?
The sun would get twice as big and be twice as bright.
400
A metal and a non-metal react, what kind of bond do they create?
ionic
500
What is the atomic symbol for "Tungsten"
W
500
If you have a lense that blocks all light wiggling up and down, but it lets through light that is wiggling side to side, that lense would be called a....
polarizing lense
500
Which lightbulb would you need to unplug to turn off all the lights?
C or D
500
What is the speed of light in m/s OR miles per hour?
186000 mph
299792458 m/s
500
What type of reaction is the following:
BaCl2+2KI −> 2KCl + BaI2
Double Replacement