Modern Physics

An online crossword puzzle with 20 words. Play it free at AgileCrosswords.com.

Clues

• device that initiates and controls a sustained chain reaction
• made oftwo protons and two neutrons
• negatively charged free electron
• energy ofcharged particles
• creates electricity using electromagnets
• lethal form of radiation
• same elements that have different atomic masses
• composed of protons and neutrons, heart of the atom
• occurs when unstable nucleus emits particles
• occurs when atoms break down
• made of particles with reversed electrical chages
• process in which energy is emitted as particles or waves
• anything smaller than an atom
• theoretical physicist
• time required for one half ofthe nuclei to decay
• large atoms split into smaller atoms and particles
• the study of energy and matter and how they interact
• small atoms combine to form larger atoms
• makes up all matter in universe
• physicist that created the atom model used in physics

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