Chemical Reactions Flashcards

1
Q

The process in which one or more substances is changed into one or more new substances is called…

A

chemical reaction.

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2
Q

starting materials and are written on the left-hand side of the equation

A

Reactants

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3
Q

the end result of the reaction and are written on the right-hand side of the equation.

A

Products

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4
Q

concise representation of chemical reactions

A

Chemical Equations

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5
Q

the ___ of the reactants and products are written in parentheses to the right of each compound

A

states

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6
Q

____ are inserted to balance the equation. Tells the number of molecules

A

coefficients

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7
Q

___ tell the number of atoms of each element in a molecule

A

Subscripts

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8
Q

Two or more substances react to form one product

A

Combination Reactions

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9
Q

one substance breaks down into two or more substances

A

Decomposition Reactions

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10
Q

Rapid reactions that produce a flame. Most often involve hydrocarbons reacting with oxygen in the air

A

Combustion Reactions

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11
Q

occurs when a more reactive element displaces, or pushes out, a less reactive element from a compound that contains the less reactive element.

A

Displacement Reaction

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12
Q

came from the Greek word that means “to transpose”

A

Metathesis

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13
Q

a double decomposition between two electrolytes, where the ions of the reactants exchange places to form new compounds.

A

Metathesis (Exchange) Reactions

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14
Q

Start by ___ those elements that appear in only one reactant and one product

A

balancing

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15
Q

Balance those ___ that appear in two or more reactants or products

A

elements

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16
Q

check to make sure that you have the ____ of each type of atom on both sides of the equation

A

same number

17
Q

__ nail is coated in Cu and the solution has changed from a blue color to a greenish color

A

Fe

18
Q

___ metal is now coated with Ag and the solution is beginning to take on a slightly blue tint

A

Cu

19
Q

___ solution begins to vigorously bubble when the Mg ribbon is added.

A

HCI

20
Q

____ are evident as they wisp through the air int othe collecting tube; gas in flammable

A

Gases

21
Q

The alcohol vapor in a person’s breath reacts with an orange solution known as potassium dichromate. When alcohol is present, this solution turns green.

A

Breath Analyzer

22
Q

compound present in chemistry in metals from the sea

A

Magnesium Hydroxide