Stefania Saraiva’s cards Flashcard

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Chapter 6 Flash Cards

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Anion

An ion with a negative charge

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True or False:

The lower the ionization energy the easier it is to remove an electron from an atom

True
An ionoc bond froms when _________ are transferred from one atom to another
electrons
Two factors that determine the arrangement of ions in an ionic crystal;

  1. The ratio of ions
  2. The relative sizes of the ions

True or false:

In a water molecule, the hydrogen side of the molecule has a partial possitve charge, and the oxygen side has a partial negative charge.

true
When atoms form a polar covalent bond, the atom with the greater attraction for electrons has a partial _______ charge
negative
Binary
describes a compound made from only two elements;

True or False:

names of anions are formed by placing the suffix -ide after part of the name of the nonmetal.

true
two properties of metals that can be explained by mettalic bonding

  1. malleability
  2. ability to conduct and electric current

Carbon

Iron

two elements that all types of steel contain

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Chapter 7 Flash Cards


True or false:

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

true
Chemists use a counting unit called a(n)________ to measure amounts of a substance because chemical reactions often involve large numbers of small particles
mole

True or False:

A composition reaction is the opposite of a synthesis reaction

true
reduction
The process in which an element gains electrons during a chemical reaction;
In a chemical reaction, energy is either released or __________
absorbed
Exothermic reaction
a chemical reaction that releases energy to its surroundings
any change that happens over time can be expressed as a(n) _________

rate

True or False:

increasing the consentration of the reactants will generally slow down a chemical reaction

false
equilibrium
a state in which the forward and reverse paths of a change take place at the same rate.

True or False:

A change in reaction conditions does not affect a chemical equilibrium

false

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