CHEMICAL EQUATIONS Flashcards

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1
Q

a written statement that uses symbols and formulas instead of words to describe the changes that occur in a chemical reaction

A

Chemical equation

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2
Q

substances that combine in the reaction

A

Reactants

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3
Q

are substances that are formed by the reaction

A

Products

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4
Q

found between reactants, means “reacts”

A

arrow right

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5
Q

separates each reactant and each product, it means “react with combines with”

A

+

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6
Q

placed after the formula of a product that is a gas

A

arrow up

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7
Q

placed after the formula of a product that is an insoluble solid

A

arrow down

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8
Q

indicates the physical state of the substance

A

Physical state

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9
Q

indicates the substance is a gas

A

(g)

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10
Q

indicates the substance is liquid

A

(l)

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11
Q

indicates the substance is solid

A

(s)

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12
Q

means the substance in in aqueous

A

(ag)

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13
Q

numbers placed in front of the formulas to balance the equation

A

Coefficients

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14
Q

words or symbols placed above or below the arrow to indicate conditions used to make the reaction occur

A

Conditions

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15
Q

triangle above arrow

A

Heat is added

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16
Q

triangle below arrow

A

Electrical energy is added

17
Q

a substance that alters the speed of the reactions without being consumed in the reaction

A

Catalyst

18
Q

steps in writing and balancing a chemical equation

A
  1. Write the correct formulas for the reactants and products
  2. Start with the more complex parts first
  3. Balance elements one at a time by placing the smallest possible whole number. H and O are the last to be balanced
  4. A balanced equation should have the same number of atoms of each elements on both sides of equation
  5. Polyatomic ions or radicals are balanced as a group
19
Q

a reaction to form one product

A

Direct combination or Syntesis

20
Q

one compound breaks down into 2 or more new substances

A

Decomposition or Analysis

21
Q

reaction between an element and a compound wherein the element replaces another element in a compound

A

Replacement or Displacement

22
Q

used to predict the products of replacement reactions

A

Electromotive or Activity series

23
Q

two compounds react to form two new compounds, there is an interchange of ions or radicals

A

Double replacement or Metathesis