Rubidium Word Search
Free Rubidium word search. We picked 12 themed words — the terms and ideas of a school subject — and laid them out on a 15×15 grid. Drag across the letters to find every word on the list.
Words to find: RUBIDIUM, ALKALIMETAL, ELEMENT, ATOM, NUCLEUS, PROTON, NEUTRON, ELECTRON, ORBITAL, SHELL, VALENCE, PERIOD.
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Rubidium word list, defined
General dictionary meanings, not specific to this puzzle's theme.
- RUBIDIUM /ruːˈbɪdiəm/ · noun
- A soft, silvery-white alkali metal with the chemical symbol Rb and atomic number 37. Rubidium is highly reactive, especially with air and water, and is used notably in atomic clocks and specialized research.
- ELEMENT /ˈɛlɪmənt/ · noun
- A fundamental or essential part of something larger; in chemistry and physics, a substance consisting of atoms all with the same atomic number that cannot be broken down into simpler substances by ordinary chemical means. Related: component, constituent, ingredient, factor.
- ATOM /ˈætəm/ · noun
- The smallest unit of an element that retains the chemical properties of that element, consisting of a nucleus of protons and neutrons orbited by electrons. More broadly, the tiniest conceivable particle or amount of something. Related: particle, molecule, unit, speck.
- NUCLEUS /ˈnuːkliəs/ · noun
- A nucleus is the central, typically rounded part of an atom or biological cell, containing genetic material and playing a central role in the cell's activity. More broadly, the term refers to a central, fundamental, or defining part of something. Related: core, center, centre, heart.
- PROTON /ˈprəʊtɒn/ (British); /ˈproʊtɑːn/ (American) · noun
- A positively charged subatomic particle found in the nuclei of atoms. In South Asian English, the word can also mean a person who supports a proposal, policy, or candidate. Related: hydrogen-1 nucleus, positively charged baryon, hydrogen nucleus.
- NEUTRON /ˈnjuːtrɒn/ · noun
- A neutral, electrically uncharged subatomic particle found in the nucleus of an atom and having a mass slightly greater than that of a proton.
- ELECTRON /ɪˈlɛktrɒn/ · noun
- A stable subatomic particle with a negative electric charge, found in all atoms and moving around the nucleus. Electrons are the primary carriers of electricity in solids and are responsible for chemical bonding. Related: negatron, subatomic particle, charged particle, beta particle.
- ORBITAL /ˈɔːbɪtəl/ · adjective; noun
- Relating to an orbit or to the path of one body around another. In physics and chemistry, a noun meaning a region or state associated with an atomic or molecular orbit. Related: orbital, orbiting, revolving, circling.
- SHELL /ʃɛl/ · noun, verb
- A shell is a hard or rigid outer covering, especially that of a mollusc, egg, seed, or animal. As a verb, to shell can mean to remove something from its shell, or to fire shells from a weapon or bomb a place with shells. Related: casing, hull, husk, covering.
- VALENCE /ˈvæləns/ · noun
- In chemistry, valence is the combining capacity of an atom, determined by the number of electrons it can gain, lose, or share in forming chemical bonds. More generally and in specialized linguistic use, it can refer to attractive quality or to the number and kinds of grammatical elements with which a word can combine. Related: valency, combining capacity, bonding capacity, appeal.
- PERIOD /ˈpɪəriəd/ (British); /ˈpɪriəd/ (US) · noun
- A period is a punctuation mark consisting of a dot placed after a sentence or at the end of an abbreviation. It can also refer to a distinct span of time, a historical era, or a regularly recurring phase in a process. Related: full stop, point, span, interval.
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