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Teacher: thomas
a soluble white powder used in fire extinguishers and effervescent drinks and as a leavening agent in baking.
a substance that cannot be broken down into simpler substances
the cation NH4+, present in solutions of ammonia and in salts derived from ammonia.
the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.
the attraction between a metal cation and the shared electrons that surround it
a measurement of the hydronuim ion concentration of a solution in a scale
a part or element of a larger whole, especially a part of a machine or vehicle.
a chemical reaction in which two compounds exchange positive ions and form two new compounds.
numbers that appear before a formula in chemical equation to show the relative proportions of each reactant and product.
Magnesiumthe chemical element of atomic number 12, a silver-white metal of the alkaline earth series. It is used to make strong lightweight alloys, especially for the aerospace industry, and is also used in flashbulbs and pyrotechnics because it burns with a brilliant white flame.
law stating that the total electric charge in n isolated system is constant
- elements that are poor conductors of heat and electric current.
a chemical reaction in which one element takes the place of another element in a compound.
a chemical reaction in which a compound breaks down into two or more simpler substances.
a chemical reaction in which two or more substances react to form a single substance.
matter that always has Substance exactly the same composition
a chemical bond in which two atoms share a pair of valence electrons
a compound of a metal with the hydroxide ion OH− (as in many alkalis) or the group
the chemical element of atomic number 19, a soft silvery-white reactive metal of the alkali metal group
the force that holds cations and anions together
a solid material that is typically hard. Good electrical and thermal conductors.
physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy
a compound that produces hydronium ions when dissolved in water