Easy Chem
What is the SECOND element of the periodic table?
HELIUM!
In a COVALENT bond, are the electrons of the atoms bonded SHARED or DONATED?
Shared. "Sharing is covalently bonding."
What is a non-Newtonian fluid? I'll give it to you even if you can only name for me one of the non-Newtonian fluids.
It is a fluid that occasionally has a fixed shaped and occasionally does not.
What is the first law of motion?
And object at rest stays at rest and an object in motion stays in motion until an outside force acts upon it.
What do we call the force that is in the opposite direction of the gravitational force?
The Normal force. When an object sits motionless on a surface, the Normal force and gravitational force are equal.
Water and oil don't mix because they are different DENSITY. What is the equation for density?
D = M/V
Go to the board. Please draw an atom and label its parts.
Protons, Neutrons, Nucleus, and Electrons
What is the difference between a chemical and a physical change?
In a chemical change, the structure of the molecules is permanently altered. In a physical change, the molecules you begin with remain unchanged.
What are the six simple machines?
Wedge, lever, pulleys, wheel and axle, inclined plane, and screw
What type of force allows us to walk?
Friction
GAS and PLASMA
Electrons that orbit in the outermost shell of an atom are called the ________________ electrons.
Valence
What did Heisenberg and Schroedinger contribute to our understanding of the atomic model?
They understood that electrons don't move in perfect circles but rather in clouds and that those clouds had predictable patterns but ill defined parameters.
What is Newton's second law of motion?
Force = mass x acceleration
If acceleration is zero, then all FORCES are equal. Does that mean that velocity must also be zero?
No. An object at constant velocity (constant meaning no acceleration) can have any velocity so long as it is constant.
What is the name of the center of an atom--where the protons and neutrons are?
A solid has FIXED shape and FIXED volume. What does a liquid have?
For extra bragging rights, what does a gas have?
Liquid: FIXED volume, but NOT fixed shape.
Gas: NOT fixed shape or fixed volume.
Tell the story of Schroedinger's cat.
Schroedinger theorized that if you put a cat into a box and shut it in you would not know if the cat was alive or dead until you took it out. Thus, until the box was opened, the cat is both alive AND dead.
What is a vector measurement?
A measurement that has direction
Which law of motion creates air resistance and how?
Newton's third law of motion--for every force acting upon an air molecule, the air molecule exerts and equal and opposite force back.
How many PROTONS does Oxygen have?
8
Because of the Law of the Conservation of Mass, we are able to balance chemical equations. What does it mean to balance a chemical equation?
It means that you will have the same number of atoms of each element on both sides of the chemical equation.
Atoms have mass. What comprises (makes up) their mass?
The protons and neutrons (NOT the electrons)
What is Newton's third law of motion?
For every action there is an equal and opposite reaction
Does everything exert gravity?
Yes. Anything with mass pulls on everything and anything else with mass.