Chemistry Definitions

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6 Terms

1
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Activation energy

The minimum amount of energy which colliding molecules must have before they can react together.
Addition polymer

2
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Fizzes and the limewater turns milky, white precipitate forms after magnesium carbonate
Catalysis

The process of changing the rate of a chemical reaction by the action of a catalyst.
Catalyst

3
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White precipitate is formed, soluble in dilute ammonia
Concentration

The amount of a substance per unit volume of solution.
Condensation reaction

4
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Fizzes and the limewater turns milky,no white precipitate forms after magnesium carbonate
Ideal gas

One that obeys the gas laws at all temperatures and pressures. In reality no such gas exists.
Ideal gas equation

5
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Brown ring forms at the junction of the two liquids
Noble gas

One of the elements of Group 0 of the Periodic Table
Octane number (of a fuel)

6
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Yellow precipitate is formed
Pi bond

A covalent bond made by the sideways overlapping of two p orbitals. The second bond in a double bond is a pi bond.
pOH