Fichas
Chem 110
Fichas del conjunto (60)
- 1What is the definition of chemistry?the study of matter and its changes
- 2What did Democritus believe?matter can be subdivided to a point until it can no longer be subdivided
- 3What is the definition of Atomos?the point things can no longer be subdivided
- 4What did Aristotle believe?all matter is continuous, can keep dividing forever, understand nature through logic, no experimentation needed
- 5What are the four elements Aristotle believed in?Earth, air, water, fire
- 6Who discovered the heliocentric solar system?Copernicus
- 7Who discovered the telescope, and saw Jupiter and its moons?Galileo
- 8Who discovered the mathematical way the planets moved?Kepler
- 9Who discovered gravity, the laws of motion, and invented calculus?Newton
- 10What did John Dalton propose?Dalton's Atomic Theory
- 11What was Dalton's Atomic Theory?matter is composed of small indivisible particles called atoms
- 12What are the building blocks of all matter?Atoms
- 13What did Thomson discover?determined the charge: mass ratio of cathode rays (discovered electrons)
- 14What did Thomson believe about atoms?atoms are divisible
- 15What is the fundamental particle of nature?electron
- 16What did Rutherford discover in his gold foil experiment?discovered the atomic nucleus, positive alpha particles went through gold foil, but some deflected/bounced back
- 17What is the plum pudding atom?all particles go through
- 18What is the nuclear atom?most particles go straight through, some are deflected, a few do not go through
- 19Who discovered protons?Rutherford
- 20Who discovered the neutron?James Chadwick
- 21In what order were the subatomic particles discovered?electron, nucleus, proton, neutron
- 22How does the weight of a proton compare to that of a neutron?they are about the same, the neutron is slightly heavier
- 23What is the mass of an electron?1/2000 of a proton
- 24What is the nucleus made of?neutrons and protons
- 25What is the volume of an atom consist of?Mostly empty space
- 26What is the number above the symbol on the periodic table?the atomic number
- 27What does the atomic number denote?the number of protons
- 28The number of protons and electrons is...the same
- 29What fundamental particle makes up protons and neutrons?quarks
- 30What is a fundamental particle?quark
- 31How many total quarks are there?6
- 32What are the main two types of quarks?up and down
- 33What is the charge of a down quark?-1/3
- 34What is the charge of the up quark?2/3
- 35How many quarks make up the proton and neutron?3 quarks
- 36What quarks make up a proton?2 up quarks and 1 down quark
- 37What quarks make up a neutron?2 down quarks and 1 up quark
- 38What is matter made from?atoms
- 39How many neutrons does hydrogen have?none
- 40What did Albert Einstein propose?Special Relativity
- 41What is Special Relativity?space/time, speed of light, light always travels at the same velocity
- 42What is the formula for energy and mass?energy = mass squared
- 43Who was Edwin Hubble?an astronomer, Hubble telescope was named after him
- 44What did Edwin Hubble discover?nebula moving away from each other
- 45What did Edwin Hubble's observation lead to?discovery of the expanding universe
- 46When did the expansion of the universe begin?13.7 billion years ago
- 47When did the sun form?8.7 billion years after the singularity
- 48What was created at the instant of the Big Bang?time and space
- 49When were the fundamental particles created?during the cosmic inflation of space filled with a lumpy quark soup
- 50When were the building blocks of matter formed?immediately
- 51What were formed after the fundamental particles?protons, neutrons, and electrons
- 52What happens as the universe expands?it pulls and density is less
- 53What are hydrogen nuclei?protons
- 54What is a Deuterium?D+, a heavy hydrogen
- 55What is deuterium made of?proton and neutron
- 56What is a helium atom made of?2 D+
- 57What is a lithium atom made of?helium, D+, neutron
- 58After the first five minutes of the Big Bang what happened?the universe cooled sufficiently that nuclear reactions could no longer take place
- 59What were the primordial concentrations?Mainly Hydrogen (75%), Helium (25%), and Lithium
- 60What formed from nuclei and electrons releasing the cosmic microwave background radiation?atoms
Información
- Descripción
- Fichas sobre Chem 110, creado por Tianna Crew el 27/08/2014.
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- Tianna Crew
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