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Transition Metal
An element located in the d-block of the periodic table (not specifically identified in the provided text).
Noble Gas
An element in Group 18 of the periodic table, known for its inertness (not specifically identified in the provided text).
Compound
A substance made up of two or more different elements chemically bonded together.
Mixture
A combination of two or more substances that are physically combined but not chemically bonded.
Neutral Solution
A solution with a pH of 7, meaning it is neither acidic nor alkaline.
Acid
A substance with a pH less than 7 that can turn universal indicator red.
Alkali
A soluble base with a pH greater than 7 that neutralizes acids and turns universal indicator blue or purple.
Neutralization
A reaction between an acid and a base (alkali) that produces a salt and water.
Salt
A compound formed from the reaction of an acid with a metal, metal oxide, metal hydroxide, or metal carbonate.
Acid + Metal
Acid + Metal -> Salt + Hydrogen
Acid + Metal oxide
Acid + Metal oxide -> Salt + Water
Acid + Metal carbonate
Acid + Metal carbonate -> Salt + Water + Carbon Dioxide