Savvas 7th Bonding and Chemical Reactions

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

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

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

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

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

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

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

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

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Substances that enter into a chemical reaction are called products.

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

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

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

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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.

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Ionic bonds form between two ions that have __________

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

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

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

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

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

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

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

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

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

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

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

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Which of the following is true about chemical reactions?

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In an endothermic reaction, energy is

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

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

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

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

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

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

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

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

Substances that enter into a chemical reaction are called products.

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

Which of the following is true about chemical reactions?

In an endothermic reaction, energy is

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