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Chapter 4 Atoms and bonding

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Section 1

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covalent bond

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Date created

Mar 1, 2020

Cards (28)

Section 1

(28 cards)

covalent bond

Front

A chemical bond formed when two atoms share electrons

Back

(Key) when you loose an electron it becomes a __ ion but when you gain an electron it becomes a _ ion

Front

Positive; negative

Back

polytomic ion

Front

ion made up of more than one atom

Back

(Key) In general, ionic compounds form ____, _ that have ____ melting points. They conduct electric current when dissolved in water or melted

Front

Hard, brittle crystal; high

Back

(Key) the attractions between the shared electrons and the protons in the nucleus of each atom __ the atom _ in a covalent bond

Front

Hold; together

Back

(Key) _____ ionic compounds, molecular compounds _ conduct electric current when melted or dissolved in water. Also compared to ionic compounds, molecular compounds generally have ______ melting points and boiling points

Front

Unlike; don't; lower

Back

valence electrons

Front

electrons that have the highest energy level and are involved in chemical bonding

Back

(Key) a metal crystal is composed of packed, charged metal ions. The valence electrons charged metal ions

Front

Closely; positively; drift among

Back

nonpolar bond

Front

a covalent bond in which electrons are shared equally

Back

alloy

Front

a mixture made of two or more elements, at least one of which is a metal

Back

molecular compound

Front

a compound that is made up of molecules

Back

Molecule

Front

a neutral group of atoms joined together by covalent bonds

Back

(Key) Unequal sharing of electrons causes covalently bonded atom to have slight __________ charges

Front

Electronic

Back

ionic bond

Front

the attraction between two oppositely charged ions

Back

Subscripts

Front

tell the ratio of elements in a compound

Back

chemical formula

Front

a group of symbols that shows the ratio of elements in a compound

Back

electron dot diagram

Front

the symbol for the element surrounded by dots

Back

(Key) to write the formula for an ionic compound write the symbol of the _ ion and the the symbol of the ion. Add subscripts that are needed to balance the charges.

Front

Positive; negative

Back

Ion

Front

an atom or group of atoms that has an electric charge

Back

crystal

Front

orderly, three-dimensional arrangement

Back

ionic compound

Front

composed of positive and negative ions that are combined so that the total positive and negative charges are equal

Back

double bond

Front

A chemical bond formed when atoms share two pairs of electrons

Back

(Key) the number of valance electrons in each atom helps determine

Front

Rather chemical properties of that element

Back

metallic bond

Front

an attraction between a positive metal ion and the electrons surrounding it

Back

polar bond

Front

a covalent bond in which electrons are shared unequally

Back

chemical bond

Front

the attractive force that holds atoms or ions together as a result of the rearrangement of electrons between them

Back

triple bond

Front

A chemical bond formed when atoms share three pairs of electrons

Back

(Key) properties of metal include shiny luster, and _________ levels of malleability, ductility, electrical conductivity, and thermal conductivity

Front

High

Back

Chapter 4 Atoms and bonding

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covalent bond

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Cards (28)

covalent bond

A chemical bond formed when two atoms share electrons

(Key) when you loose an electron it becomes a ______________ ion but when you gain an electron it becomes a _____________ ion

Positive; negative

polytomic ion

ion made up of more than one atom

(Key) In general, ionic compounds form __________, ___________ __________ that have __________ melting points. They conduct electric current when dissolved in water or melted

Hard, brittle crystal; high

(Key) the attractions between the shared electrons and the protons in the nucleus of each atom __________ the atom _________ in a covalent bond

Hold; together

(Key) ___________ ionic compounds, molecular compounds ___________ conduct electric current when melted or dissolved in water. Also compared to ionic compounds, molecular compounds generally have __________ melting points and boiling points

Unlike; don't; lower

valence electrons

electrons that have the highest energy level and are involved in chemical bonding

(Key) a metal crystal is composed of __________ packed, __________ charged metal ions. The valence electrons __________ __________ charged metal ions

Closely; positively; drift among

nonpolar bond

a covalent bond in which electrons are shared equally

alloy

a mixture made of two or more elements, at least one of which is a metal

molecular compound

a compound that is made up of molecules

Molecule

a neutral group of atoms joined together by covalent bonds

(Key) Unequal sharing of electrons causes covalently bonded atom to have slight __________ charges

Electronic

ionic bond

the attraction between two oppositely charged ions

Subscripts

tell the ratio of elements in a compound

chemical formula

a group of symbols that shows the ratio of elements in a compound

electron dot diagram

the symbol for the element surrounded by dots

(Key) to write the formula for an ionic compound write the symbol of the ___________ ion and the the symbol of the __________ ion. Add subscripts that are needed to balance the charges.

Positive; negative

Ion

an atom or group of atoms that has an electric charge

crystal

orderly, three-dimensional arrangement

ionic compound

composed of positive and negative ions that are combined so that the total positive and negative charges are equal

double bond

A chemical bond formed when atoms share two pairs of electrons

(Key) the number of valance electrons in each atom helps determine

Rather chemical properties of that element

metallic bond

an attraction between a positive metal ion and the electrons surrounding it

polar bond

a covalent bond in which electrons are shared unequally

chemical bond

the attractive force that holds atoms or ions together as a result of the rearrangement of electrons between them

triple bond

A chemical bond formed when atoms share three pairs of electrons

(Key) properties of metal include shiny luster, and _________ levels of malleability, ductility, electrical conductivity, and thermal conductivity

High

(Key) when you loose an electron it becomes a __ ion but when you gain an electron it becomes a _ ion

(Key) In general, ionic compounds form ____, _ that have ____ melting points. They conduct electric current when dissolved in water or melted

(Key) the attractions between the shared electrons and the protons in the nucleus of each atom __ the atom _ in a covalent bond

(Key) _____ ionic compounds, molecular compounds _ conduct electric current when melted or dissolved in water. Also compared to ionic compounds, molecular compounds generally have ______ melting points and boiling points

(Key) a metal crystal is composed of packed, charged metal ions. The valence electrons charged metal ions

(Key) to write the formula for an ionic compound write the symbol of the _ ion and the the symbol of the ion. Add subscripts that are needed to balance the charges.