Compounds Science

Question 1

There is a connection between the polarity of a molecule and the
types of _____________________ that are present.

Answer 1

polar or non-polar covalent bonds

Question 2

To know if a molecule is polar or nonpolar, it is always useful to look at ____________.

Answer 2

Lewis structures

Question 3

Is bonded by covalent bonding in which
one end of the molecule is slightly positive, while the other end of the molecule is slightly negative.

Answer 3

polar molecule

Question 4

A polar molecule is bonded by ___________ in which
one end of the molecule is slightly positive, while the other end of the
molecule is slightly negative.

Answer 4

covalent bonding

Question 5

A polar molecule is bonded by covalent bonding in which
one end of the molecule is slightly _________, while the other end of the
molecule is slightly ____________.

Answer 5

positive and negative

Question 6

Bonded thru covalent
bond, the electrons are evenly distributed.

Answer 6

nonpolar molecule

Question 7

When molecules share electrons equally in a covalent
bond there is no ___________ across the
molecule.

Answer 7

net electrical charge

Question 8

This means they have unequal sharing of
electrons.

Answer 8

polar covalent bond

Question 9

Polar Molecules means they have unequal sharing of
electrons. In which, one atom has a _______________ while the other one has a
_________________

Answer 9

a smaller number of electrons and bigger number of electrons.

Question 10

Electrons in a polar
covalent bond are unequally shared between
the ___________, which results in what?

Answer 10

two bonded atoms, partial
positive and negative charges.

Question 11

The separation
of the partial charges creates a what?

Answer 11

DIPOLE

Question 12

The word DIPOLE MEANS what?:=

Answer 12

TWO POLES

Question 13

these are the separated partial positive and negative
charges?

Answer 13

Dipole or two poles

Question 14

results when a
molecule contains polar bonds in an
unsymmetrical arrangement which means they
contain lone pairs of electrons on a central
atom or having atoms with different
electronegativities bonded.

Answer 14

polar molecule

Question 15

is a measure of the tendency of an
atom to attract a bonding pair of electrons.

Answer 15

Electronegativity

Question 16

> 0.5 and not equal to 0.5?

Answer 16

polar molecule.

Question 17

< 0.5 or equal to 0.5

Answer 17

nonpolar molecule.

Question 18

greater than 2.0 or equal to 2.0?

Answer 18

Ionic Bond

Question 19

are extremely polar molecules.

Answer 19

Ionic Bonds

Question 20

WHEN GETTING THE ELECTRONEGATIVITY, WHAT SHOULD GO FIRST? THE BIGGER OR SMALLER NUMBER?

Answer 20

Bigger (There lmao)

Question 21

WHEN GETTING THE ELECTRONEGATIVITY, WHAT SHOULD GO FIRST? THE BIGGER OR SMALLER NUMBER?

Answer 21

Bigger (There lmao)

Question 22

is a characteristic of polar covalent
molecules.

Answer 22

Molecular geometry

Question 23

helps us to predict the molecular structure,
including the approximate bond angles around a central
an atom of a molecule-based on the number of bonds and lone electron pairs in its Lewis structure.

Answer 23

Valence Shell Electron-Pair Repulsion Theory (VSEPR
theory)

Question 24

States that electron pairs in the valence
shell of a central atom will follow an arrangement that
minimizes the repulsion between these electron pairs by
maximizing the distance between them.

Answer 24

The VSEPR model

Question 25

What does the VSEPR Model states?

Answer 25

States that electron pairs in the valence shell of a central atom will follow an arrangement that minimizes the repulsion between these electron pairs by maximizing the distance between them.

Question 26

What shows the arrangement of electron pairs around each central atom and the correct arrangement of atoms in a molecule?

Answer 26

VSEPR theory

Question 27

It should be clear, that the theory only considers what?

Answer 27

electron-pair repulsions, nuclear-nuclear repulsions and nuclear-electron attractions.

Question 28

shows the arrangement of electron pairs around each central atom and the correct arrangement of atoms in a molecule.

Answer 28

VSEPR theory

Question 29

A straight line

Answer 29

Linear

Question 30

----------/\---------------

Answer 30

Bent

Question 31

Letter X shape with only 3 lines?

Answer 31

Trigonal Planar

Question 32

Letter X shape with 4 lines?

Answer 32

Tetrahedral

Question 33

Letter X shape with 4 lines?

Answer 33

Tetrahedral

Question 34

Examples of NONPOLAR MOLECULES (list them)

Answer 34

Hydrogen (H2) Nitrogen (N2) Oxygen (O2) Fluorine (F2) Chlorine (Cl2) Iodine (I2) Bromine (Br2) *Carbon dioxide - CO2 *Benzene - C6H6 *Carbon tetrachloride - CCl4 *Methane - CH4 *Ethylene - C2H4 gasoline (C8H18) toluene (C6H5CH3) Helium Neon Argon Krypton Neon Xenon Radon

Question 35

Asymmetrical bond

Answer 35

POLAR COMPOUND

Question 36

Symmetrical bond

Answer 36

NON-POLAR COMPOUND

Question 37

meaning all the sides around the central atom are identical - bonded to the same element with no unshared pairs of electrons.

Answer 37

SYMMETRICAL

Question 38

have zero or very small dipole moments.

Answer 38

Molecules whose atoms have equal or nearly equal electro-negativities

Question 39

When molecules share electrons equally in a covalent bond there is ______________

Answer 39

no net electrical charge across the molecule.

Question 40

In a nonpolar covalent bond, the electrons are ________________

Answer 40

evenly distributed.

Question 41

You can predict nonpolar molecules will form when atoms have _____________

Answer 41

the same or similar electronegativity

Question 42

Nonpolar molecules also form when?

Answer 42

Atoms sharing a polar bond arrange such that the electric charges cancel each other out.

Question 43

Polar solutes can be dissolved by what?

Answer 43

Polar Solvents

Question 44

Nonpolar solutes can be dissolved by what?

Answer 44

nonpolar solvents.

Question 45

Polar or Non-polar? Which Melts slower? Why?

Answer 45

Polar have strong intermolecular forces between atoms, therefore they need a higher temp. to melt. While none polar has weak intermolecular forces between atoms, therefore they need a lower temp. to melt.

Question 46

Polar has a ______ boiling point

Answer 46

Higher

Question 47

Nonpolar has _____ boiling point

Answer 47

lower

Question 48

The general rule is that "like dissolves like", which means?

Answer 48

polar molecules will dissolve into other polar liquids and nonpolar molecules will dissolve into nonpolar liquids.

Question 49

oil is __________while water is _________. Do they mix?

Answer 49

nonpolar while water is polar, nope

Question 50

When mixing paint you only mix what?

Answer 50

The same type of paint together

Question 51

Important rule of paint?

Answer 51

Water base with water base, oil with oil, chalk/mineral paint with chalk/mineral paint.

Question 52

Any structure that isn't an X is what?

Answer 52

Polar

Question 53

Any structure that is an X is what?

Answer 53

NonPolar

Question 54

A bent X structure is what?

Answer 54

Polar

Question 55

Are formed when atoms lose, accept or share electrons.

Answer 55

CHEMICAL BONDS

Question 56

Occurs when there is a transfer of one or more valence electrons form one atom to another.

Answer 56

IONIC BOND

Question 57

Ionic Bond occurs when?

Answer 57

when there is a transfer of one or more valence electrons form one atom to another.

Question 58

Ionic bond exist in?

Answer 58

It exists between metal and nonmetal atoms

Question 59

A cluster of atoms is also called what?

Answer 59

Molecule

Question 60

It is a small unit that can undergo a chemical reaction

Answer 60

Molecule

Question 61

Influences the strength and types of intermolecular forces of attraction in a substance.

Answer 61

Molecule Polarity

Question 62

is a physical property of compounds such as melting and boiling points, solubility, and intermolecular forces between molecules

Answer 62

Polarity