Particle Model and Atomic Structure Crossword Puzzle

QUESTIONS LIST:

• activity: the rate at which an unstable nucleus decays.
• alpha: particle made up of a helium nucleus.
• becquerel: the unit of radioactive decay.
• bohr: name of the model of the atom that suggested that electrons orbit the nucleus at set distances.
• electron: negatively charged particle found in an atom.
• ions: atoms with a resultant charge due to the loss or gain of electrons.
• isotopes: atoms with the same number of protons but different numbers of neutrons.
• neutrons: a neutrally charged particle in the nucleus of an atom.
• sieverts: the unit used for radiation dosage.
• irradiation: the process of an object being exposed to nuclear radiation. the object doesn't become radioactive.
• condensation: the changing from vapour state to liquid state
• density: the mass per unit volume of an object.
• pascals: the unit of pressure
• pressure: the force acting perpendicular to a surface, per unit area.
• sublimation: the direct changing of a substance from a solid state to a vapour state, without passing through the liquid phase.