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TOPIC 2 VOCAB

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Page 1: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

TOPIC 2 VOCAB

Page 2: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

ANALYSIS

A chemical reaction in which a compound is broken down (decomposed) into simpler substances

Page 3: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

CHEMICAL CHANGE

A reaction in which the composition of a substance is changed

Page 4: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

COEFFICIENT

Number placed in front of a formula to show how many moles of that substance

Page 5: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

DECOMPOSITION

Chemical reaction in which a compound is broken down into simpler substances (analysis)

AB A + B

Page 6: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

DIATOMIC MOLECULE

Molecule containing two identical atoms

Page 7: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

DOUBLE REPLACEMENT

Chemical reaction in which ions exchange places

AB + CD AD + BD

Page 8: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

EMPIRICAL FORMULA

Chemical formula with coefficients in lowest terms

Page 9: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

ENDOTHERMIC

• Chemical reaction that absorbs heat• Heat is on the reactant (left) side of the equation• Products have higher potential energy than reactants

Page 10: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

EXOTHERMIC

• Chemical reaction that releases heat• Heat is on the product (right) side of the equation• Products have less potential energy than reactants

Page 11: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

FORMULA

Symbols and subscripts that represent the composition of a substance

Page 12: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

MOLECULAR FORMULA

Actual ratio of atoms in a substance (not necessarily lowest terms)

Page 13: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

MOLECULE

Smallest unit of a covalently bonded substance

Page 14: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

PHYSICAL CHANGE

Change that does not alter the chemical properties of a substance

Page 15: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

POLYATOMIC ION

Covalently bonded group of atoms that have a net charge and behave as a single unit

Page 16: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

PRODUCT

• Substance formed in a chemical reaction• On the right side of the equation

Page 17: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

QUALITATIVE

Information that cannot be counted or measured

Page 18: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

QUANTITATIVE

Information that can be counted or measured

Page 19: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

REACTANT

• Starting substance in a reaction• On the left side of the equation

Page 20: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

SINGLE REPLACEMENT

Reaction in which a more reactive element replaces a less reactive element in a compound

AB + C AC + B

Page 21: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

SUBSCRIPT

Number written after a symbol that tells how many of that substance

Page 22: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

SYMBOL

A one, two, or three (experimental only), letter designation of an element

Page 23: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

SYNTHESIS

Chemical reaction in which two or more substances chemically combine to form one substance

A + B AB

Page 24: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

TOPIC 3 VOCAB

Page 25: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

FORMULA MASS

Sum of atomic masses of all atoms

Page 26: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

GRAM FORMULA MASS

Formula mass expressed in g rather than in u

Page 27: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

MOLE

• 6.02 x 1023 particles• Number atoms present on 12.000g of carbon-12

Page 28: A chemical reaction in which a compound is broken down (decomposed) into simpler substances

PERCENT COMPOSITION

Percent of each element compared to the total mass of the compound


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