Show:
Vocab.
Section 1
Section 2
Section 3
Section 4
100
2 protons and 2 neutrons = He nucleus.
What is an alpha particle?
100
The smallest particle of an element that retains the properties of the element.
What is an atom?
100
Radiation traveling from the cathode to the anode within the tube.
What is a Cathode Ray?
100
Number of protons in an atom.
What is an Atomic Number?
100
Reactions which involve a change in an atom's nucleus.
What are nuclear reactions?
200
Shows atomic number and mass number for all particles
What is a nuclear equation?
200
All matter is composed of extremely small particles called atoms.
What is Dalton's Atomic Theory?
200
Negatively charged particles that are part of all forms of matter.
What are electrons?
200
Atoms with the same number of protons but a different number of neutrons.
What is an isotope?
200
Spontaneous emission of radiation.
What is radioactivity?
300
Emission of a beta particle from a nucleus.
What is beta radiation?
300
One of the most influential philosophers.
Who is Aristotle?
300
Positively charged subatomic particles.
What are protons?
300
Protons + Neutrons
What is a Mass number?
300
Rays and particles emitted by radioactive substances.
What is radiation?
400
Fast moving electron from the nucleus
What is a beta particle?
400
Atoms are not created nor destroyed, but rather rearranged.
What is Dalton's theory?
400
Charge of an electron.
What is a millikan?
400
Mass Number - Atomic Number
What is the number of neutrons?
400
Unstable nuclei lose energy by emitting radiation in a spontaneous process.
What is radioactive decay?
500
High energy radiation that possess no mass.
What is a Gamma Ray?
500
7,000,000,000
What is the world population of atoms?
500
Subatomic particle with no charge.
What are neutrons?
500
Found on the periodic table of elements and takes into account all the isotopes and their abundances.
What is Average Atomic Mass?
500
Emitting an alpha particle from the nucleus of an atom.
What is Alpha Radiation?