Unit 3 Test Review - Atoms and Nuclear Chemistry

The special name given to elements with an atomic number greater than 92 is

How many neutrons are found in Copper-65?

What is the mass and atomic numbers for the Xenon-133?

Which list is correct for nuclear emissions from greatest to least penetrating power?

How does fission lead to a nuclear chain reaction?

Nuclei that fall inside the __________ are considered stable (resistant to change).

The half-life of thorium-234 is 25 days. How many half-lives did the sample go through at the end of 100 days?

The ____________ number is the number of protons and neutrons in an atom of an element.

Most of the _________ of an atom is found in the nucleus.

What does the following picture represent?

Who identified the atomic number?

If the atom were the size of two football fields, the nucleus would be about the size of

What is the avg. atomic mass of oxygen if, in nature, it is 99.76% Oxygen-16, 0.040% Oxygen-17 and 0.20% Oxygen-18?

The chemical behavior of an element is determined by the number of ____________ its atoms contain.

Who determined the charge of an electron?

Atoms emit radiation because their __________ are unstable.

Which man's atomic theory was based on scientific research?

What is the title of Unit 4?

The accidental discovery of the cathode ray tube led to what invention?

How many protons does Iridium-192 have?

______ occurs when a nucleus is split into smaller pieces, whereas ______ occurs when nuclei combine.

Who determined the mass of the neutron is nearly equal to that of a proton?