Chemistry Test Chapter 7
Chemical formula for:Ammonium Sulfide
(NH4)2S
Predict Formula: Ammonium and Thiosulfate
(NH4)2S2O3
Chemical formula for: Ammonium Arsenate
(NH4)3AsO4
Charge of the cation: BeBr2
+2
Charge of the cation: Cr3(AsO4)2
+2
Charge of the cation: PbS3O3
+2
how many chloride (Cl-) ions are present in a formula unit of magnesium chloride, given that the charge on a Mg ion is 2+?
2
if combined lithium with sulfur, how many lithium atoms would you need in the written molecular formula?
2
Chemical formula for: Silver (I) Phosphide
Ag3P
Chemical formula for: Aluminum Sulfide
Al2S3
Chemical formula for: Beryllium Nitride
Be3N2
Chemical formula for: Calcium Iodate
Ca(IO3)2
Chemical formula for: Calcium Hydroxide
Ca(OH)2
Chemical formula for: Calcium Bromide
CaBr2
Chemical formula for: Cobalt (III) Phosphate
CoPO4
Predict Formula: Cesium and Bromite
CsBrO3
Chemical formula for: Copper (I) Oxide
Cu2O
Chemical formula for: Iron (III) Perchlorate
Fe(ClO4)3
chemical formula for iron (III) sulfide
Fe2S3
Chemical formula for: Hydrogen Nitride
H3N
Predict Formula: Indium and Phosphorous
InP
Chemical formula for: Potassium Chlorite
KClO2
Chemical formula for: Magnesium Sulfite
MgSO3
Chemical formula for: Sodium Nitride
Na3N
Chemical formula for: Nickel (III) Chromate
Ni2(CrO4)3
Chemical formula for: Nickel (II) Chloride
NiCl2
Compound for: Ni2(SO4)3
Nickel (III) sulfate
an ionic bond is
a force that holds together atoms that are oppositely charged
ionic bonds generally occur between
a metal and a nonmetal
the overall charge of a formula unit for an ionic compound is
always zero
Compound for: NH4Br
ammonium bromide
Compound for: (NH4)2CO3
ammonium carbonate
a positive ion forms when
an atom loses one or more valence electrons
Compound for: Be3(PO4)2
beryllium phosphate
flexible or brittle? brittleness
brittle
Compound for: CaCl2
calcium chloride
Compound for: Ca3N2
calcium nitride
an atom that has lost electrons is a
cation
Compound for: Cs3P
cesium phosphide
Formula name: ClO- 3
chlorate
Formula name: Cl-
chloride
Formula name: ClO- 2
chlorite
Compound for: CoBr2
cobalt (II) bromide
lattice energy has
compounds containing ions with greater charges have higher bond strength
binary ionic compounds
consist of atoms of only two different elements
a three-dimensional arrangement of particles in an ionic solid is called a
crystal lattice
T/F: a Cl- ion is an example of a cation
false
T/F: a positively charged ion is called an anion
false
T/F: elements tend to react so that they acquire the electron structure of a halogen
false
T/F: ions that have larger charges tend to produce a more negative lattice energy than ions with smaller charges do
false
T/F: metals in the s- or p- blocks generally have only one common oxidation number, per group, while d-block elements can have more than one possible oxidation number.
false
T/F: non-metals lose their outer electrons easily.
false
T/F: nonmetals form a stable outer electron configuration by losing electrons and becoming anions
false
T/F: the atomic number is defined as the number of electrons in an atom.
false
T/F: the energy of an ionic compound is higher than that of the separate elements that formed it
false
good or poor? electrical conductivity in the liquid state
good
good or poor? electrical conductivity when dissolved in water
good
hard or soft? hardness
hard
high or low? boiling point
high
high or low? melting point
high
Compound for: HF
hydrogen fluoride
Formula name: ClO-
hypochlorite
salts are examples of
ionic compounds
a chemical bond results from the interaction between two
ions
in a crystal lattice of an ionic compound
ions are surrounded by ions of the opposite charge
Compound for: Fe(IO3)2
iron (II) iodate
Compound for: Fe2O3
iron (III) oxide
the formation of a stable ionic compound from ions
is always exothermic
Compound for: LiHSO4
lithium bisulfate
Compound for: Li2O2
lithium peroxide
when a lithium atom forms a Li+ ion, the lithium atom
loses an electron
Compound for: Mg(ClO)2
magnesium hypochlorite
Compound for: MgO
magnesium oxide
the symbol Fe+3 represents
one ion of iron
Formula name: ClO- 4
perchlorate
good or poor? electrical conductivity in the solid state
poor
Compound for: K3AsO4
potassium arsenate
Compound for: KBrO3
potassium bromate
Compound for: K3N
potassium nitride
Compound for: K2S
potassium sulfide
Compound for: NaBrO3
sodium bromate
Compound for: NaI
sodium iodide
Compound for: SrF2
strontium fluoride
the number of protons in an atom is
the Atomic number
what is the relationship between lattice energy and the strength of the attractive force holding ions in place?
the more positive the lattice energy is, the greater the force
in electron transfer involving a metallic atom and nonmetallic atom during i on formation, which is correct?
the nonmetallic atom gains electrons from the metallic atom
T/F: a sodium atom tends to lose one electron when it reacta
true
T/F: elements in group 1 lose their one valence electron, forming an ion with a 1+ charge.
true
T/F: ice melting to water is a physical property
true
T/F: large ions tend to produce a more negative value for lattice energy than smaller ions do
true
T/F: noble gases have a full outer shell of electrons
true
T/F: the crystal lattice of ionic compounds affects their melting and boiling points
true
T/F: the electron structure of a zinc ion (Zn+2) is an example of a pseudo-noble gas formation
true
T/F: the ending -ide is used to designate an anion
true
T/F: the lattice energy is the energy required to separate the ions of an ionic compound
true
T/F: we can predict properties of elements if they are in the same family on the periodic chart.
true