(2 Questions) First letter always capitalized. If there is a second letter, it is always lower-case. If you don't know a symbol, look it up in Table S. 2A-1 Chemical Symbols 1. What is the total number of different elements present in NH4NO3? (1) 7 (2) 9 2A-2 Diatomic M (3) 3 (4) 4 Period: Topic 2. What is the total number of oxygen atoms in the formula MgSO4 7 H₂O? [The represents seven units of H₂0 attached to one unit of MgSO4.] (1) 11 (2) 7 (3) 5 (4) 4 N21 F2, Cl₂, Br2.
(2 Questions) First letter always capitalized. If there is a second letter, it is always lower-case. If you don't know a symbol, look it up in Table S. 2A-1 Chemical Symbols 1. What is the total number of different elements present in NH4NO3? (1) 7 (2) 9 2A-2 Diatomic M (3) 3 (4) 4 Period: Topic 2. What is the total number of oxygen atoms in the formula MgSO4 7 H₂O? [The represents seven units of H₂0 attached to one unit of MgSO4.] (1) 11 (2) 7 (3) 5 (4) 4 N21 F2, Cl₂, Br2.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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I need help with this study guide for my test to
![2A-1 Chemical Symbols
First letter always capitalized. If there is a second letter, it is always lower-case.
If you don't know a symbol, look it up in Table S.
*****
1. What is the total number of different elements present
in NH4NO3?
(1) 7
(2) 9
3. Which two particle diagrams represent mixtures of
diatomic elements?
A
(3) 3
(4) 4
Key
1
O= atom of one element
(1) A and B
(2) A and C
Some pure elements only exist in nature as a pair of atoms bonded together including O2, H2, N2, F2, Cl2, Br2,
(1 Questions)
2A-2 Diatomic Molecules (Gases)
and 12
atom of another element
B
8
8
C
(3) B and C
(4) B and D
2A-3 Molecular Formulas (See Questions 2A-4)
(1) C₂H₂ and CH
(2) C3H4 and CH₂
2A-4 Empirical Formulas (24 Questions)
Represents the number and kinds of atoms in a molecule of a covalent compounds
The molecular formula reduced by its greatest common denominator.
4. Which pair consists of a molecular formula and its
corresponding empirical formula?
(3) P4010 and P205
(1) C₂H₂ and CH3CH3
(2) C6H6 and C₂H₂
(4) SO2 and SO3
correctly represents a
5. Which pair of formulas
molecular formula and its corresponding empirical
formula?
2. What is the total number of oxygen atoms in the
formula MgSO4 7 H₂O? [The represents seven units of
H₂0 attached to one unit of MgSO4.]
(1) 11
(2) 7
(3) C4H6 and CH
(4) C5H8 and C₂H₂
Topic 2
6. Write the empirical formula for the compound C6H12O6.
[1]
Grover Cleveland High School
4
(3) 5
(4) 4
7. The compounds C₂H4 and C4H8 have the same
(1) freezing point at standard pressure
(2) boiling point at standard pressure
(3) molecular formula
(4) empirical formula
8. Given the structural formula:
HHHH
IIII
HO-C-C-C-C-OH
IIII
HHHH
What is the empirical formula of this compound?
(1) CH3O
(2) C₂H5O
(3) C4H1002
(4) C8H2004
Page 13](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa1453fc0-db8d-487b-8b17-7bc2353db69e%2F2f71623d-e953-480e-8a22-91493293fd26%2Fr8v3it_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2A-1 Chemical Symbols
First letter always capitalized. If there is a second letter, it is always lower-case.
If you don't know a symbol, look it up in Table S.
*****
1. What is the total number of different elements present
in NH4NO3?
(1) 7
(2) 9
3. Which two particle diagrams represent mixtures of
diatomic elements?
A
(3) 3
(4) 4
Key
1
O= atom of one element
(1) A and B
(2) A and C
Some pure elements only exist in nature as a pair of atoms bonded together including O2, H2, N2, F2, Cl2, Br2,
(1 Questions)
2A-2 Diatomic Molecules (Gases)
and 12
atom of another element
B
8
8
C
(3) B and C
(4) B and D
2A-3 Molecular Formulas (See Questions 2A-4)
(1) C₂H₂ and CH
(2) C3H4 and CH₂
2A-4 Empirical Formulas (24 Questions)
Represents the number and kinds of atoms in a molecule of a covalent compounds
The molecular formula reduced by its greatest common denominator.
4. Which pair consists of a molecular formula and its
corresponding empirical formula?
(3) P4010 and P205
(1) C₂H₂ and CH3CH3
(2) C6H6 and C₂H₂
(4) SO2 and SO3
correctly represents a
5. Which pair of formulas
molecular formula and its corresponding empirical
formula?
2. What is the total number of oxygen atoms in the
formula MgSO4 7 H₂O? [The represents seven units of
H₂0 attached to one unit of MgSO4.]
(1) 11
(2) 7
(3) C4H6 and CH
(4) C5H8 and C₂H₂
Topic 2
6. Write the empirical formula for the compound C6H12O6.
[1]
Grover Cleveland High School
4
(3) 5
(4) 4
7. The compounds C₂H4 and C4H8 have the same
(1) freezing point at standard pressure
(2) boiling point at standard pressure
(3) molecular formula
(4) empirical formula
8. Given the structural formula:
HHHH
IIII
HO-C-C-C-C-OH
IIII
HHHH
What is the empirical formula of this compound?
(1) CH3O
(2) C₂H5O
(3) C4H1002
(4) C8H2004
Page 13
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