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Questions and Answers
Which of the following is an example of a chemical property?
Which of the following is an example of a chemical property?
What is the term for a pure substance made up of only one type of atom?
What is the term for a pure substance made up of only one type of atom?
In a physical change, which of the following occurs?
In a physical change, which of the following occurs?
Which scientist is known for contributing to the atomic theory?
Which scientist is known for contributing to the atomic theory?
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How can you classify the change that occurs when iron rusts?
How can you classify the change that occurs when iron rusts?
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What is the mass number of an atom if it has 12 protons and 10 neutrons?
What is the mass number of an atom if it has 12 protons and 10 neutrons?
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Which of the following represents a diatomic molecule?
Which of the following represents a diatomic molecule?
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Which of the following correctly describes a Type I ionic compound?
Which of the following correctly describes a Type I ionic compound?
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What type of reaction is represented by the equation: $2H2 + O2 \rightarrow 2H2O$?
What type of reaction is represented by the equation: $2H2 + O2 \rightarrow 2H2O$?
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Which prefix corresponds to the number 3 in covalent compound naming?
Which prefix corresponds to the number 3 in covalent compound naming?
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Which statement concerning elements is true?
Which statement concerning elements is true?
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What is the mass number of an atom that consists of 21 protons, 24 neutrons and 21 electrons?
What is the mass number of an atom that consists of 21 protons, 24 neutrons and 21 electrons?
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Which of the following elements is an alkali earth metal?
Which of the following elements is an alkali earth metal?
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Atoms of different isotopes of the same element differ in their number of:
Atoms of different isotopes of the same element differ in their number of:
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What does every Fluorine atom have?
What does every Fluorine atom have?
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What is the long form electron configuration of Chlorine?
What is the long form electron configuration of Chlorine?
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Which of the following elements has the shortest electron configuration?
Which of the following elements has the shortest electron configuration?
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What is the approximate molar mass of Na3PO4?
What is the approximate molar mass of Na3PO4?
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Which compound has a molar mass of approximately 90?
Which compound has a molar mass of approximately 90?
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Which element has the electron configuration [Ar] 4s2 3d10 4p1?
Which element has the electron configuration [Ar] 4s2 3d10 4p1?
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Which subatomic particle is the heaviest?
Which subatomic particle is the heaviest?
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What defines an isotope of an element?
What defines an isotope of an element?
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How many valence electrons does sodium have?
How many valence electrons does sodium have?
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What do the coefficients in a chemical equation indicate?
What do the coefficients in a chemical equation indicate?
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What is the shape of an s orbital?
What is the shape of an s orbital?
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What does the octet rule state?
What does the octet rule state?
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How is molar mass defined for an element?
How is molar mass defined for an element?
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What is the charge of a cation?
What is the charge of a cation?
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Which of the following is a characteristic of noble gases?
Which of the following is a characteristic of noble gases?
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Which group contains the most reactive non-metals?
Which group contains the most reactive non-metals?
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What is a common property of transition metals?
What is a common property of transition metals?
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How many valence electrons does aluminum contain?
How many valence electrons does aluminum contain?
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Is bromine a diatomic element?
Is bromine a diatomic element?
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What is the stoichiometric coefficient of sodium in the balanced equation for the reaction of sodium and oxygen?
What is the stoichiometric coefficient of sodium in the balanced equation for the reaction of sodium and oxygen?
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In the balanced equation for the reaction of potassium and boron oxide, how many potassium atoms are involved?
In the balanced equation for the reaction of potassium and boron oxide, how many potassium atoms are involved?
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What is the product formed when phosphoric acid reacts with potassium hydroxide?
What is the product formed when phosphoric acid reacts with potassium hydroxide?
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How many molecules of water are produced in the balanced equation for the reaction of phosphoric acid and potassium hydroxide?
How many molecules of water are produced in the balanced equation for the reaction of phosphoric acid and potassium hydroxide?
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In the reaction of decane and oxygen, what is the total number of carbon dioxide molecules produced?
In the reaction of decane and oxygen, what is the total number of carbon dioxide molecules produced?
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How many moles are there in 75 grams of LiF?
How many moles are there in 75 grams of LiF?
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What is the mass of 15 moles of CoCl₂ in grams?
What is the mass of 15 moles of CoCl₂ in grams?
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How many atoms are in 180 grams of Mn₂N₃?
How many atoms are in 180 grams of Mn₂N₃?
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How many grams are equivalent to 6.98 x 10²⁵ atoms of Boron?
How many grams are equivalent to 6.98 x 10²⁵ atoms of Boron?
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What is a common mistake made in these calculations?
What is a common mistake made in these calculations?
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Which of the following is a compound?
Which of the following is a compound?
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Which of the following is an element?
Which of the following is an element?
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Which of the following is a molecule?
Which of the following is a molecule?
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Which state of matter is characterized by having a definite shape and volume?
Which state of matter is characterized by having a definite shape and volume?
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In which state of matter do particles have the most freedom of movement and fill the entire volume of their container?
In which state of matter do particles have the most freedom of movement and fill the entire volume of their container?
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What defines an isotope?
What defines an isotope?
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How do you calculate the number of neutrons in an element?
How do you calculate the number of neutrons in an element?
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An element with 6 protons, 6 neutrons, and 6 electrons is identified as which element?
An element with 6 protons, 6 neutrons, and 6 electrons is identified as which element?
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How many different elements can you find in the compound H₂SO₄?
How many different elements can you find in the compound H₂SO₄?
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What is the total number of atoms in the molecule C₂H₆O?
What is the total number of atoms in the molecule C₂H₆O?
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