Mafe?s flashcards

When the type of electron configuration that makes an atom stable and not likely to react?
When the highest occupied energy level of an atom is filled with electrons, the atom is stable and not likely to react.
Atom loses electrons to?
Form a cation
Atom gains electrons to?
Form an anion
In what the shape of an ionic crystal depends on?
The arrangement of ions in its lattice.
What is a covalent bond?
Is a chemical bond in which two atoms share a pair of valence electrons.
In a molecule of a compound, electrons are always shared equally by both atoms?
No
One mole of oxygen has a mass of 32 grams,What is the mass of four moles of oxygen?
128 grams.
What is chenical energy?
Is the energy stored in the chemical bonds of a substance.
What is equilibrium?
Is a state in which the forward and reverse paths of a change take place at the same rate.
What happens when a chemical change does not go to completion?
A chemicla equilibrium is stablished between the forward and reverse reactions.
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