Across
- 4. a stable subatomic particle with a charge of negative electricity
- 8. individually separate and distinct.
- 10. a subatomic particle of about the same mass as a proton but without an electric charge
- 11. a container, typically made of glass or plastic
- 12. the chemical element of atomic number 6
- 14. the freezing point of water.
- 15. atoms as a source of nuclear energy
- 18. Payload is the carrying capacity of an aircraft or launch vehicle,
- 19. series of events that are regularly repeated in the same order
- 20. a substance that flows freely but is of constant volume, having a consistency like that of water or oil.
- 21. a particular place or point
- 22. a colorless, odorless reactive gas
- 23. a measure of the amount of matter contained in or constituting a physical body
- 24. is the chemical element with the symbol H and atomic number 1.
Down
- 1. The photon is a type of elementary particle
- 2. wind the continuous flow of charged particles from the sun which permeates the solar system
- 3. feeling or arousing strong or tender emotions.
- 5. the emission of energy as electromagnetic waves or as moving subatomic particles.
- 6. the imparting or exchanging of information or news
- 7. prone to change, fail, or give way not stable.
- 9. a change which is a result or consequence of an action or other cause
- 10. Fission is a process in nuclear physics in which the nucleus of an atom splits into two or more smaller nuclei as fission products,
- 13. very close to almost.
- 16. firm and stable in shape; not liquid or fluid.
- 17. hydrideDescriptionThe helium hydride ion or hydroxide helium ion or helium is a cation with the chemical formula HeH⁺
- 18. continuous physical force exerted on or against an object by something in contact with it.