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