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Level 38

Ionic Bond


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Anion
(-) Gain an electron
Cation
(+) Lose an electron
ion
A charged atom
Ionic Bond
a bond that results from electrostatic attraction between oppositely charged ions. The cation is positively charged, while the anion is negatively charged.
lose or gain electrons
describe two ways that an ion forms from an atom
Sodium ion
loss of electron
chloride ion
Chlorite OCL is reduced to
calcium ion
loss of two electrons
oxide ion
gain of two electrons
valence electrons
an electron in the highest occupied energy level of an atom;available to be lost, gained, or shared in the formation of chemical compounds
properties
chemists used the _______ of elements to sort them into groups
representative elements' group number
How can you determine the number of valence electrons in an atom of a representative element?
electron dot structures
diagrams that show valence electrons as dots around a chemical symbol
electrically neutral
Although ionic compounds are composed of ions, they are _______.
formula units
lowest whole-number ration of ions in an ionic compound
monatomic ion
ion formed from a single atom
High
E1 Temp
Crystalline
A solid that is orderly arranged. Ex: Desk
coordination number
number of ions of opposited charge that surround the ion in a crystall
conduct
ionic compounds can _______ an electric current when melted or dissolve in water
five
How many valence electrons are in an atom of phosphorus
four
Simple Molecules Lewis Molecules rules
gives up electrons.
How does calcium obey the octet rule when reacting to form compounds?
one
How many electrons does silver have to give up in order to achieve a pseudo-noble-gas electron configuration
Zero
A plot of reactant concentration versus time gives a straight line. What is the order of the rxn for this reactant?
highest level of an atom is filled
What type of electron configuration makes an atom stable and not likely to react.
electron dot diagram
This is a model of an atom in which each dot represents a valence electron.
electrons
subatomic negatively charged particle, orbiting the nucleus.
each atom ends up with a more stable electron arrangement
What is the result of a sodium atom transferring an electron to a chlorine atom
remove
The lower the ionization energy, the easier it is to __ an electron from an atom.
-1
What is the charge of a chloride ion in the chemical formula MgCl>2
ratio of ions
Two factors that determine the arrangement of ions in an ionic crystal are _______ and the relative sizes of the ions.
strong
if a substance gives up electrons readily it is said to be a //// reducing agent
arrangement of ions
The shape of an ionic crystal lattice depends on the arrangement of ions in its rigid framework, or lattice.
shapes
How are crystals classified into groups?
neon
By losing one valence electron, a sodium atom achieves the same electron arrangement as an atom of _______
bond
a force that holds groups of 2 or more atoms together and allows them to function as a unit
Atom
Basic building block of all matter.
Formula
A chemical formula is a qualitative and quantitative description of the composition of a pure substance, either an **element or a compound**
chemical property
A characteristic of a pure substance that describes its ability to change into different substances
physical property
A characteristic of a pure substance that can be observed without changing it into another substance
alkali metals
Elements for which the 2nd ionization energy is MUCH higher than the first.
proton
¹1P
Electron
A negatively charged subatomic particle located in the electron cloud outside the nucleus. It determines how atoms combine with other atoms.
neutron
¹0n
Isotope
An atom of a particular element that contains a different number of neutrons
Radioisotope
An isotope that breaks up into smaller atoms and give off radiation when it happens
Dot and cross
A diagram to show where electrons come from and go to
Negative ion
An atom that has GAINED an electron
Positive ion
An atom that has GAINED electrons
lattice
3D system of points designating the centers of components (atoms, ions, molecules) that makes up the substance