Across
- 3. Atoms are the basic particles of the chemical elements and the fundamental building blocks of matter.
- 5. Atoms with the same number of protons but different numbers of neutrons
- 7. the use of sustained nuclear fission to generate heat and electricity
- 9. consists of electrically positive protons and electrically neutral neutrons.
- 11. a process that begins when a neutron or other particle strikes a nucleus
- 12. Nuclear fusion is a reaction in which two or more atomic nuclei combine to form a larger nucleus.
- 13. a class of chemicals where the nucleus of the atom is unstable
Down
- 1. the emission of energy in the form of ionizing radiation
- 2. the emission of energy as electromagnetic waves or as moving subatomic particles,
- 4. a series of chemical reactions where the products of the reaction contribute to the reactants of another reaction
- 6. the time required for a quantity (of substance) to reduce to half of its initial value
- 8. radioactive waste material
- 10. the structure in a cell that contains the chromosomes.