8Th Grade Science--"ionic Bonds"

Front 1

What is an atom or a group that has become electrically charged?

Back 1

Ion.

Front 2

What happens to an atom when it LOSES an electron?

Back 2

It gains a negative charge & becomes a POSOTIVE ion.

Front 3

What happens to an atom when it GAINS an electron?

Back 3

It gains a negative charge & becomes a NEGATIVE ion.

Front 4

What is an ionic bond?

Back 4

The attraction between two OPPOSITLEY charged ions.

Front 5

Why does a sodium atom become more stable when it loses one valace electron?

Back 5

Because it has +1 charge and LOSES one and becomes NEUTRAL.

Front 6

In an ionic compound, the name of the ________ ion comes first.

Back 6

Posotive.

Front 7

When does the end of a name of a negative ion become -ide?

Back 7

If the negative ion is an element.

Front 8

Three charecteristic properties of ionic compounds are-----

Back 8

Crystal Shape,
High Melting Points,
& Electrical Conductivity.

Front 9

What is an orderly, three dimensional arrangement formed by ions?

Back 9

Crystal.

Front 10

In an ion, all ions are attracted to-----

Back 10

Ions near it that have an opposite charge.

Front 11

At room temp, ionic bonds are strong enough to cause ALL compounds to be ______.

Back 11

Solids.

Front 12

Ionic compounds conduct electricity well when -----

Back 12

Ionic compounds dissolve in water.

Front 13

DEFINITION-

Covalent bond-

Back 13

Chemical bond formed when two atoms share electrons.

Front 14

Double Bond-

Back 14

A chemical bond formed when atoms share two pairs of electrons.

Front 15

Molecular Compounds contain-----

Back 15

Molecules having covalently bonded atoms.

Front 16

Molecular compounds have a slight electrical charge because-----

Back 16

Some atoms pull more strongly on the shared electrons than other atoms do.

Front 17

Polar covalent bonds are shared-----

Back 17

Unequally.

Front 18

Electrons are shared in non polar covalent bonds by-----

Back 18

Electrons moving closer to one atom.

Front 19

An atom can be non polar when it has polar bonds by-----

Back 19

having some of the same properties.

Front 20

CHOOSE ONE-

Water molocules (Are/Are not) polar?

Back 20

Are.

Front 21

Why do polar and non polar molecules have different properties?

Back 21

Because they have different charges.

Front 22

Water and vegetable oil DON'T mix because-----

Back 22

Oil is non polar and non polar doesn't mix well with water.

Front 23

A naturally occurring solid that has crystal structure and a definite chemical composition is called a-----

Back 23

Mineral.

Front 24

All properties of a mineral depends on-----

Back 24

Measurements or testing.

Front 25

The arrangement of particles in a mineral and the kind of bonds holding them together determines-----

Back 25

Mineral properties such as crystal shape, hardness, and the ways the crystals break apart.