Pressure
What is the formula for pressure?
Pressure = Force / Area OR
Pressure = Density x Gravity constant x Depth
A + B --> AB is what type of reaction?
Synthesis
In which state of matter do the particles move the fastest?
Gas
What happens when you put a balloon in liquid nitrogen?
The balloon gets smaller. It's volume decreases.
Who was the famous scientist that was the first woman to win a Nobel Prize?
Marie Curie
What is the pressure if 12N acts over 3cm2?
4 N/cm2
AB --> A + B is what type of reaction?
Decomposition
Gases have a (definite/indefinite) shape and a (definite/indefinite) volume.
Gases have an indefinite shape and an indefinite volume.
Describe the relationship between Volume and Temperature of a gas at a fixed pressure. Draw a graph on the board.
Volume increases with temperature.
What famous Scientist came up with the theory of special relativity?
Albert Einstein
If a pressure of 24 N/m2 is acting over 4 m2 what is the force in N?
P=F/A so P*A=F so 24*4=96N
AB + C --> AC + B is what type of reaction?
A single replacement
Liquids have a (definite/indefinite) shape and a (definite/indefinite) volume.
Liquids have an indefinite shape and a definite volume.
Describe the relationship between Temperature and Pressure of a gas at a fixed volume. Draw a graph on the board.
Pressure increases with an increasing temperature.
What is the capital city of Angola?
Luanda
What is the pressure of water at a depth of 5 meters? Assume density of water is 1000kg/m3 and gravity is 10 N/Kg. (Don't add atmospheric pressure).
50,000 N/m2
What is the difference between physical and chemical change?
A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed
What is it called when a solid turns into a gas?
Sublimation
Describe the relationship between Volume and Pressure of a gas at a fixed temperature. Draw a graph on the board.
When the pressure increases the volume decreases.
When the pressure decreases the volume increases.
What is the 3rd highest mountain by altitude in the world?
Kangchenjunga
What is the highest instantaneous pressures we can obtain here on Earth?
Fusion reactor at the National Ignition Facility and in Thermonuclear weapon detonations. These achieve pressures of 5 x 10^12 and 6.5 x 10^15 Pascal respectively. For comparison, the pressure inside our Sun’s core is 2.5 x 10^16 Pascal.
Name the famous chemical reaction plants use to convert H2O + CO2 to glucose and O2
Photosynthesis
What is it called when a gas turns into a solid?
Solidification or reverse sublimation
Why does the volume of the of a balloon increase when you blow into it? The temperature is the same and the pressure in the room is the same. The pressure in the balloon increases. That goes against the relationship where volume decreased as pressure increases????
Because we added more particles to the balloon. Those relationship are only valid when the number of particles stays the same.
In what country is the city of Antananarivo found?
Madagascar