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Chemical Compounds and Reactions
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Chemical Compounds and Reactions
Chemical Compounds and Reactions
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1
Question
What is a Molecular Formula?
Answer
Actual number of atoms of each element in a compound, not in lowest terms.
2
Question
What is an Empirical Formula?
Answer
Lowest term representation of the elements in a compound.
3
Question
What is a Structural Formula?
Answer
Representation of molecules that shows the arrangement of atoms.
4
Question
What are Ionic Compounds made of?
Answer
Made up of 1 metal and 1 nonmetal.
5
Question
What happens when a metal loses electrons?
Answer
They become ions, and their names do not change.
6
Question
What happens when nonmetals gain electrons?
Answer
They become ions, and their names change to end with -ide.
7
Question
What is the first step in naming Binary Ionic Compounds?
Answer
Write the name of the metal ion.
8
Question
What is the second step in naming Binary Ionic Compounds?
Answer
Write the name of the nonmetal ion.
9
Question
Give an example of a Binary Ionic Compound.
Answer
CaO is named Calcium Oxide.
10
Question
What is the Stock Method for naming Binary Ionic Compounds with Variable Charge?
Answer
1. The cation or metal name is unchanged. 2. Put parentheses to determine the charge. 3. Change the ending of the anion or nonmetal to -ide.
11
Question
Provide an example of the Stock Method naming.
Answer
CuCl2 is named Copper(II) Chloride.
12
Question
What is the Classical Method for naming Binary Ionic Compounds?
Answer
1. Change the cation or metal name using the Latin name. 2. The anion is still written with -ide.
13
Question
Provide an example of the Classical Method naming.
Answer
Cr2O3 is named Chromic Oxide.
14
Question
What is the first step in writing the formula for Ionic Compounds?
Answer
Write the symbol of the cation metal.
15
Question
What is the second step in writing the formula for Ionic Compounds?
Answer
Write the symbol of the anion nonmetal.
16
Question
What is the criss-cross method in ionic compounds?
Answer
A method used to determine the ratio of ions in a compound by swapping the charges.
17
Question
What is an example of a formula writing for Ionic Compounds?
Answer
Magnesium Iodide is written as MgI2.
18
Question
What are Covalent Compounds made of?
Answer
Made up of 2 nonmetal elements.
19
Question
What is the first step in naming Covalent Compounds?
Answer
Write the first nonmetal.
20
Question
What is the second step in naming Covalent Compounds?
Answer
Write the second nonmetal ending in -ide.
21
Question
What prefixes are used when naming Covalent Compounds?
Answer
mono-, di-, tri-, tetra-, etc.
22
Question
Provide an example of a Covalent Compound.
Answer
N2O4 is named dinitrogen tetroxide.
23
Question
What are Ternary Compounds made up of?
Answer
Made up of 1 polyatomic ion and an element.
24
Question
What is the process for naming Ternary Compounds?
Answer
1. Use the polyatomic ion's name. 2. Write the other element's name; if metal, the name is unchanged, if nonmetal, it ends with -ide.
25
Question
Provide an example of a Ternary Compound.
Answer
NH4F is ammonium fluoride.
26
Question
What is the first step in writing the formula for Ternary Compounds?
Answer
Write the symbol of the metal ion.
27
Question
What is the second step in writing the formula for Ternary Compounds?
Answer
Write the formula of the polyatomic ion.
28
Question
What is the Law of Conservation of Mass?
Answer
Energy is neither created nor destroyed; matter can neither be created nor destroyed.
29
Question
What is a Word Equation in representing chemical reactions?
Answer
A representation of a chemical reaction using the names of the reactants and products.
30
Question
What are Diatomic Molecules?
Answer
Molecules that consist of two atoms of the same element, e.g., H2, N2, O2.