Savvas 7th Bonding and Chemical Reactions

Last updated almost 3 years ago

28 questions

1

Library

Savvas 7th Bonding and Chemical Reactions

Last updated almost 3 years ago

28 questions

1

A(n)__________   shows the number of valence electrons in an atom in pictorial fashion.

1

The attractive force that holds two atoms together is called a(n) __________.

1

Because it can either lose or share electrons when it combines with other elements, each __________ l element has some of the properties of metals and some of the properties of nonmetals.

1

Ionic bonds form between two ions that have __________

1

A(n)__________  is an atom or group of atoms that has an electric charge.

1

The attraction between oppositely charged ions is called a(n)__________ . 

1

In order to have a stable arrangement of 8 valence electrons, metal atoms are likely to __________    electrons.

1

In an ionic compound, the total positive charge of all the positive ions  __________  the total negative charge of all the negative ions.

1

Because the force of attraction between the positive and negative ions is so strong, ionic compounds have  __________  melting points.

1

In an electron dot diagram, two pairs of shared electrons represents a__________.

1

A number written in front of a chemical formula is a(n) __________.

1

The principle that states that matter is neither created nor destroyed during a chemical reaction is called the law of __________ .

1

The production of carbon dioxide during the burning of a fuel is an example of a(n) __________   reaction.

1

In a chemical equation, the arrow is read as __________ .

1

The law of conservation of mass was first demonstrated by the French chemist __________ .

1

An atom's valence electrons are those electrons that have the highest energy.

True

False

The reactivity of a metal depends on how easily it loses its valence electrons.

True

False

Within each period in the periodic table, elements have similar properties because they have the same number of valence electrons.

True

False

The chemical bond formed when two atoms share electrons is called an ionic bond.

True

False

Covalent bonds usually form when a nonmetal combines with a metal.

True

False

If a molecule contains polar bonds, the molecule may or may not be polar overall.

True

False

The forces between molecules are much stronger than the forces between ions.

True

False

Water boils at 100°C. This is an example of a chemical property.

True

False

Substances that enter into a chemical reaction are called products.

True

False

The ability to react with oxygen is an example of a chemical property.

True

False

A(n)__________   shows the number of valence electrons in an atom in pictorial fashion.

The attractive force that holds two atoms together is called a(n) __________.

Because it can either lose or share electrons when it combines with other elements, each __________ l element has some of the properties of metals and some of the properties of nonmetals.

Ionic bonds form between two ions that have __________

A(n)__________  is an atom or group of atoms that has an electric charge.

The attraction between oppositely charged ions is called a(n)__________ . 

In order to have a stable arrangement of 8 valence electrons, metal atoms are likely to __________    electrons.

In an ionic compound, the total positive charge of all the positive ions  __________  the total negative charge of all the negative ions.

Because the force of attraction between the positive and negative ions is so strong, ionic compounds have  __________  melting points.

In an electron dot diagram, two pairs of shared electrons represents a__________.

A number written in front of a chemical formula is a(n) __________.

The principle that states that matter is neither created nor destroyed during a chemical reaction is called the law of __________ .

The production of carbon dioxide during the burning of a fuel is an example of a(n) __________   reaction.

In a chemical equation, the arrow is read as __________ .

The law of conservation of mass was first demonstrated by the French chemist __________ .

Which of the following is true about chemical reactions?

They are accompanied by changes in energy.

They form new substances with new properties.

both A and B

neither A nor B

In an endothermic reaction, energy is

absorbed

released

converted to mass

synthesized

A reaction that has two compounds as reactants and two compounds as products is most likely a

synthesis reaction.

single replacement reaction.

double replacement reaction.

decomposition reaction.

An atom's valence electrons are those electrons that have the highest energy.

True

False

The reactivity of a metal depends on how easily it loses its valence electrons.

True

False

Within each period in the periodic table, elements have similar properties because they have the same number of valence electrons.

True

False

The chemical bond formed when two atoms share electrons is called an ionic bond.

True

False

Covalent bonds usually form when a nonmetal combines with a metal.

True

False

If a molecule contains polar bonds, the molecule may or may not be polar overall.

True

False

The forces between molecules are much stronger than the forces between ions.

True

False

Water boils at 100°C. This is an example of a chemical property.

True

False

Substances that enter into a chemical reaction are called products.

True

False

The ability to react with oxygen is an example of a chemical property.

True

False

Which of the following is true about chemical reactions?

They are accompanied by changes in energy.

They form new substances with new properties.

both A and B

neither A nor B

In an endothermic reaction, energy is

absorbed

released

converted to mass

synthesized

A reaction that has two compounds as reactants and two compounds as products is most likely a

synthesis reaction.

single replacement reaction.

double replacement reaction.

decomposition reaction.