Chapter 7 - Chemical Quantities and Reactions
7.1 - The Mole
One element mole contains a mixture of 6.02 x 10^23; a mole of a compound contains a mold of 6.02 * 10^23.
7.2 - Molar Mass
Any substance has a molar mass (g/mole) equal to its numerical atomic mass in grams or the sum of the atomic masses, which were multiplied in a formula by their subscriptions.
7.3 - Calculations Using Molar Mass
The molar mass is used as a factor in conversion to moles or to change certain moles to grams in grams.
7.4 - Equations for Chemical Reactions
When the atoms of the initial substances rearrange to form new substances, a chemical reaction occurs.
The formulas of the substances which respond to a reaction arrow on the left and the products forming on the right side of the reaction arrow are shown by a chemical equation.
In order to balance the atoms of each element of reactants and products, a chemical equation is balanced by writing coefficients, small whole numbers, in front of formulas.
7.5 - Types of Chemical Reactions
Many chemical reactions can be organized according to the type of reaction: combination, decomposition, single substitution, double substitution, combustion.
7.6 - Oxidation–Reduction Reactions
It is oxidation – a reduction reaction when electrons are transferred in a reaction.
One is losing electrons and another is gaining electrons
The number of lost and acquired electrons is overall the same.
7.7 - Mole Relationships in Chemical Equations
The total weight of reactants is equal to the total weight of products in a balanced equation.
The factors used in an equation that describes the relation between mole/mole factors of any two components
A mole-mole factor is used to find moles of a different substance in the reaction when the amount of moles in one substance is known.
7.8 - Mass Calculations for Chemical Reactions
The molar masses and the mole-mole factors of the compounds are used to change the number of grams of a substance to the gram of a different substance in calculations using equations.
7.9 - Energy in Chemical Reactions
The energy difference between the products and the reactants is the heat of the reaction in chemicals.
Heat is released in an exothermal reaction because the energy of the products is lower than the energy of the reactants.
Heat is absorbed during an endothermic reaction as the energy of the products is greater than the energy of the reactants
The rate of response is the speed of conversion of the reactants to products.
The rates of response can increase by increasing reactants levels, increasing the temperature, or adding a catalyst.
7.1 - The Mole
One element mole contains a mixture of 6.02 x 10^23; a mole of a compound contains a mold of 6.02 * 10^23.
7.2 - Molar Mass
Any substance has a molar mass (g/mole) equal to its numerical atomic mass in grams or the sum of the atomic masses, which were multiplied in a formula by their subscriptions.
7.3 - Calculations Using Molar Mass
The molar mass is used as a factor in conversion to moles or to change certain moles to grams in grams.
7.4 - Equations for Chemical Reactions
When the atoms of the initial substances rearrange to form new substances, a chemical reaction occurs.
The formulas of the substances which respond to a reaction arrow on the left and the products forming on the right side of the reaction arrow are shown by a chemical equation.
In order to balance the atoms of each element of reactants and products, a chemical equation is balanced by writing coefficients, small whole numbers, in front of formulas.
7.5 - Types of Chemical Reactions
Many chemical reactions can be organized according to the type of reaction: combination, decomposition, single substitution, double substitution, combustion.
7.6 - Oxidation–Reduction Reactions
It is oxidation – a reduction reaction when electrons are transferred in a reaction.
One is losing electrons and another is gaining electrons
The number of lost and acquired electrons is overall the same.
7.7 - Mole Relationships in Chemical Equations
The total weight of reactants is equal to the total weight of products in a balanced equation.
The factors used in an equation that describes the relation between mole/mole factors of any two components
A mole-mole factor is used to find moles of a different substance in the reaction when the amount of moles in one substance is known.
7.8 - Mass Calculations for Chemical Reactions
The molar masses and the mole-mole factors of the compounds are used to change the number of grams of a substance to the gram of a different substance in calculations using equations.
7.9 - Energy in Chemical Reactions
The energy difference between the products and the reactants is the heat of the reaction in chemicals.
Heat is released in an exothermal reaction because the energy of the products is lower than the energy of the reactants.
Heat is absorbed during an endothermic reaction as the energy of the products is greater than the energy of the reactants
The rate of response is the speed of conversion of the reactants to products.
The rates of response can increase by increasing reactants levels, increasing the temperature, or adding a catalyst.