Chem Test Chptr 6

What is a metallic bond?

A physical bond where a negatively charged metal ions are held together within a fluid of loosely held electrons

A chemical bond where negatively charged metal ions are held together within a fluid of loosely held electrons

A chemical bond in which positively charged metal ions are held together within a fluid of loosely held electrons

A chemical bond where positively charged metal ions are held together within a fluid of tightly held neutrons

What are the two other terms referring to "fluid of electrons?"

Sea of electrons

Electron fluid

Ocean of electrons

Delocalized electrons

Why do metals conduct heat and electricity?

Because free electrons easily vibrate

Their electrons can easily move in response to increase in heat

Their electrons respond to the opaque and shiny nature of metal

What is an alloy?

A metal mixture that is opaque and shiny

A mixture of two or more metallic elements

A mixture of two metals

A mettaloid mixture

What is a metal called when found in pure form in nature?

Natural metal

Original metal

Native metal

Ionic metal

High grade ores contain ______ concentrations of compounds from which metals can be extracted.

High

Low

Ores are.....

Made in laboratories

Obtained from rocks in nature

The bond formed by a sharing of electrons is a(n) _______ bond

Ionic

Covalent

A compound of covalently bonded atoms is a(n) ______ compound

Covalent

Ionic

A(n)________ is any group of atoms held together by covalent bonds

Ion

Molecule

Atom

The smallest part of a compound....?

Atom

Molecule

Cell

Covalent bonds tend to form between atoms which usually ______ electrons.

Lose

Gain

Covalent bonds that gain electrons are usually formed between two _______.

Metals

Nonmetals

All atoms covalently bonded together, the entire crystal is considered what?

Micromolecule

Macromolecule

Single Molecule

In the VSEPR model, electron pairs move __________________ from the other electron pairs

As far away as possible

As close as possible

What does VSEPR stand for?

Valence-Shell- Electric-Power

Valence- Shell- Electron- Pair

What is the VSEPR theory model with one in the middle and three on top, and sides that lays flat.

Triangular Pyramidal

Triangular Planar

Linear

Tetrahedral

What is the VSEPR theory model that stands like a camera tripod?

Tetrahedral

Triangular Planar

Triangular Pyramidal

Bent

In a covalent bond between like atoms, the electron cloud will be shared _______.

Evenly

Unevenly

Between two different atoms the electron cloud is being shared ________

Evenly

Unevenly

When electrons between atoms in a covalent bond are shared equally the bond is......

Polar

Nonpolar

When electrons between atoms in a covalent bond are shared unequally the bond is......

Nonpolar

Polar

When electrons are shared unequally, the structure which has separation of charges is what?

Polar

Dipole

Nonpolar

When all bonds in molecule are non polar, the molecule as a whole is _______-

Polar

Nonpolar

When a molecule made up of two polar atoms, the molecule as a whole is ________.

Polar

Nonpolar

When the difference in electronegativities is net zero, the bond is mainly

Polar

Nonpolar

Substances made up of polar molecules tend to have a ______ boiling point

High

Low

Why do substances with polar molecules have a high boiling point?

They have strong attractions for each other

They have weak attractions for each other

They have no reaction to each other

Substances made up of nonpolar molecules have a _____ boiling point

Low

High

Substances made up of nonpolar molecules have low boiling points because _________-

Their molecules have strong attraction to each other

Their molecules have weak attraction to each other

Their molecules have no attraction to each other

Term for a molecule where electrons are not evenly distributed _______

Molecule

Nonpolar

Dipole

Mixture

Dipole-Dipole attractions are attractions between two _______ molecules

Nonpolar

Polar

What is a solution?

A heterogeneous mixture consisting of a double phase

A homogeneous mixture consisting of a double phase

A homogeneous mixture consisting of a single phase

A heterogeneous mixture consisting of a single phase

Example of a liquid solution...

Gemstones

Air

Sugar Water

Water

Example of a solid solution

Air

Water

Gemstones

Rock

Example of a gaseous solution

Nitrogen

Air

Water

Sugar Water

What is an alloy?

A mixture of different nonmetals

A mixture of different metals

A mixture of similar metals

Example of an Alloy

Stainless Steel

Glass

Gold

Rock

What is a solvent?

Smallest amount of a compound

Dissolves in Solute

Largest amount of compound

What is a solute?

Dissolves in Solvent

Largest amount of compound

Smallest amount of molecule

What is a saturated solution?

When no more solvent can be dissolved

When no more solute can be dissolved

When no more molecules can be added

What is an unsaturated solution?

Has reached the limit of solute dissolved

Has reached the limit of solvent dissolved

Has not reached the limit of solute dissolved

Has not reached the limit of solvent dissolved

Supersaturated solution?

More solvent than normal

More solute than normal

Less solvent than normal

Less solute than normal

Chem Test Chptr 6

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