Greek Philosop hers Dalton’ s Atomic Theory How atoms differ Radioac tivity Types of radiatio n The atom Subatomic particles

A 1 Said that matter is made of atoms which move through empty space

A 2 Stated that empty space cannot exist and that matter is made up of earth fire, and water

A 3 Marked the beginning of the modern atomic theory

A 4 Dalton’s idea’s were most like who??

B 1 Atoms are composed of extremely small particles called?

B 2 Atoms of a given element had identical what?

B 3 Atoms do this when they combine to make compounds

B 4 In a chemical reaction, atoms do this.

C 1 The smallest part particle of an element that retains the properties of the element.

C 2 Discovered by JJ Thomson, this atomic particle was found using a cathode ray tube

C 3 The model Thomson composed that states that the atom is a uniform, positively charged sphere containing electrons.

C 4 The scientist and name of the experiment who used the Plum Pudding model to determine properties of the nucleus, including charge, relative size, and density

D 1 Carries a positive charge and is located in the nucleus of the atom

D 2 Discovered by James Chadwick, contains a neutral charge, is located in the nucleus, is about the same mass as a proton

D 3 Carries a negative charge, located surrounding the nucleus, and has a mass much smaller than a proton and neutron

D 4 Most of the atoms’ mass

E 1 The number of protons in an atom is also the elements identity

E 2 Atoms with the same number of protons but different number of neutrons

E 3 The atomic number plus the number of neutrons

E 4 Defined as one twelfth the mass of a carbon-12 atom. (An easier way to express the mass of an atom

F 1 The rays and particles emitted by radioactive material

F 2 A reaction that involves a change in an atom’s nucleus.

F 3 Unstable nuclei lose energy by emitting radiation in this spontaneous process.

F 4 Substances that spontaneously emit radiation is called this process

G 1 Contains two protons and two neutrons and is equivalent to a Helium-4 nucleus

G 2 Consists of a fast moving electron

G 3 High energy radiation that possess no mass usually accompanies alpha and beta radiation

G 4 The quantities that are conserved when balancing a nuclear reaction

A 1 Democritus

A 2 Aristotle

A 3 Dalton

A 4 Democritus

B 1 ATOMS

B 2 Size, Shape, and Mass

B 3 Combine in simple whole number ratios

B 4 Separate, combine and rearrange

C 1 ATOM

C 2 Electron

C 3 Plum Pudding model

C 4 Rutherford – Gold Foil Experiment

D 1 PROTON

D 2 Neutron

D 3 Electron

D 4 Nucleus

E 1 Atomic Number

E 2 Isotope

E 3 Mass Number

E 4 amu

F 1 Radiation

F 2 Nuclear reaction

F 3 Radioactive decay

F 4 Radioactivity

G 1 Alpha particle

G 2 Beta particle

G 3 Gamma ray

G 4 Mass number and atomic number