Show:
C 1 - Intro to Chemistry
C 2 - Matter and Change
C 3 - Scientific Measurement
C 4 - Atomic Structure
C 5 - Electrons and Atoms
100
Which of the following terms is incorrect? - water vapor - nitrogen vapor - oxygen gas - neon gas
nitrogen vapor (it's a gas at room temp)
100
What phase of matter is easiest to compress?
Gas
100
0.00044 contains how many significant figures?
2
100
Who first suggested the idea of atoms?
Democritus
100
When an electron moves closer to the nucleus, it's energy _________.
decreases
200
Study chemistry for the sake of knowledge is _____ chemistry.
pure
200
The two types of mixtures we studied are ____________ and __________
heterogeneous, homogenous
200
How close your measurements are to the accepted value is how ___________ you are.
accurate
200
Which subatomic particle did JJ Thompson discover?
Electron (Cathode Ray Experiment)
200
The principal quantum number tells us ________
Energy level (shell)
300
The theory that states all molecules of matter are constantly moving is called ________ ________ Theory
Kinetic Molecular
300
Name an intensive property
Property doesn't depend on amount: conducts electricity, density, combustible, etc
300
How close your measurements are to each other is how __________ you are.
precise
300
What unit is used to measure the mass of protons and neutrons?
AMU or Atomic Mass Unit
300
Name all of the sublevels (s, p, d, f) for the third energy level.
3s, 3p, 3d
400
The part of the atom that is responsible for chemical reactions is the ___________.
Electrons
400
Name something in this room that is a mixture
Air
400
In 0.503 L which number is estimated?
3
400
Write the charge and mass for an electron, proton, and neutron.
electron: -1 charge , no mass proton: +1 charge, 1 AMU Neutron: no charge, 1AMU
400
What two pieces of information do you need to calculate average atomic mass?
Which isotopes, and relative abundance of each.
500
Where would a bowling ball have the most mass, Earth, Jupiter, or the Moon?
Same mass on all three places. (weight changes)
500
The best way to determine if a chemical change has taken place is to determine if the ____________ of the reactants are different after the change.
Composition
500
What is the volume of 45.6 g of silver if the density of silver is 10.5 g/mL?
4.34 mL
500
Name three different models that were accepted for the evolution of the atom.
Dalton - "Billiard Ball Model" Thompson - "Plum pudding Model" Rutherford - Rutherford Model (Dense Nucleus, mostly empty space) Bohr Model - Circular paths Quantum Mechanical Model - Orbitals
500
Heisenberg's Uncertainty Principle states you can't know ___________ and ___________ of an electron at the same time.
Position and velocity