Scientists Subatomic Particles Numbers in Science Atomic Absorption and Emission Potpourri (a little bit of everything)
100
J J Thomson
Who discovered the electron
100
proton
What particle in the atom is positively charged?
100
protons
Atomic number tells you the number of what in an atom?
100
ground state
An electron in its normal energy level is in its?
100
an extremely small (invisible), hard, solid, sphere of mass
Describe Dalton's atom
200
Democritus
Who was the first person credited with the idea of an atom
200
protons and neutrons
What 2 particles in an atom have almost equal mass?
200
82
Using a periodic table, how many protons does lead have?
200
absorb energy, heat or electricity
In order for an electron to jump to an excited state in an atom, what must they do? This usually comes from?
200
nucleus
What is the positively charged center of mass in an atom called?
300
Gold Foil Experiment, the nucleus of an atom
What was Rutherford's famous experiment and what did he discover?
300
repel
Two electrons next to each other would attract or repel?
300
10.81 AMU
What is the average atomic mass of boron?
300
Energy, which corresponds to a certain wavelength and frequency of EMR that might be visible.
When an electron falls back to a lower energy state, what do they give off?
300
32
How many electrons can be held in the 4th energy level?
400
In specific energy levels
Bohr said electrons have to exist where?
400
protons and electrons
To be electrically neutral, what two particles must be equal to each other in number?
400
16
How many neutrons does a sulfur atom have most of the time?
400
anything that gives off light. For example a lightbulb, fireworks, a fire, neon signs, streetlamps, etc.
Name three things that work based on the principle of atomic absorption and emission of energy.
400
7 protons and 7 neutrons in the center nucleus of the atom, 2 electrons of the first energy level and 5 electrons on the second energy level
Describe what an atomic diagram of nitrogen would look like
500
1. Matter is made of atoms
2. All atoms of an element are identical, but different from a different element's atoms
3. Atoms cannot be broken apart, created, or destroyed
4. Atoms combine in simple whole number ratios to form compounds
5. In a reaction atoms separate, get rearranged, and bond in new ways to form new substances
State any 3 of the 5 parts of Dalton's atomic theory
500
isotopes, number of neutrons
chlorine-35 and chlorine-37 are called what? And what is the only thing different about them?
500
18, 22, 18
How many protons, neutrons, and electrons does an atom of argon usually have?
500
gamma, x-ray, UV, visible light, infrared, microwave, radio
State the types of electromagnetic energy in order from smallest wavelength to longest wavelength.
500
39
19K
Write the nuclear symbol for an element with 19 protons, 20 neutrons, and 19 electrons






Atomic Theory and Structure

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