Fission
The process where a large atomic nucleus splits into two smaller nuclei.
Nuclear Fission
Atoms of the same element that have different numbers of neutrons.
A reaction that produces an insoluble solid when two solutions are mixed.
precipitation
The scientist who proposed the theory of evolution by natural selection.
Charles Darwin
The particle that strikes a uranium nucleus to start fission.
Neutron
The three main types of nuclear radiation.
alpha, beta & gamma
What is produced when an acid and a metal react
salt + hydrogen gas
Preserved remains or traces of ancient organisms.
Fossils
This element is commonly used as fuel in nuclear power plants and undergoes fission.
Uranium
The type of radiation that consists of 2 protons and 2 neutrons.
alpha radiation
How you test for carbon dioxide gas
Lime water goes cloudy
Similar bone structures in different animals provide this type of evidence for evolution.
Homologous Structures
The form of radiation released during nuclear fission.
Gamma Radiation
This type of radiation is stopped by a sheet of paper.
alpha radiation
The reason gold does not easily displace other metals from compounds.
It is very unreactive
Tailbones in humans and forearms in whales
The name given to a series of fission reactions caused by neutrons released from previous fission events.
Chain Reaction
After three half-lives, this fraction of the original radioactive material remains.
1/8
The two products formed when hydrochloric acid reacts with sodium hydroxide.
sodium chloride + water
Adaptations improve an organism's chances of survival and this.
Reproduction