Question

Question 5
Balance the following the chemical equation:

Mg + O2 → MgO

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Blank 2:
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Question 6
Balance the following the chemical equation:

Al + O2 → Al2O3

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Question 7
Balance the following the chemical equation:

MgO + CaS → MgS + CaO

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Question 8
Balance the following the chemical equation:

N2 + O2 → NO

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Question 9
Balance the following the chemical equation:

Ti3N + MgO → Mg3N2 + Ti2O

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Question 10
Which situation would react faster and why?





a
Example A would be faster because of a low surface area.
b
Example B would be faster because of a high surface area.
c
Example A would be faster because of a high surface area.
d
Example B would be faster because of a low surface area.
Question 11
Match the following terms to the correct definitions

Column A
1.
products:
products
2.
reactants:
reactants
3.
covalent bond:
covalent bond
4.
electronegativity:
electronegativity
5.
ionic bond:
ionic bond
6.
polar covalent bond:
polar covalent bond
7.
valence electrons:
valence electrons
Column B
a.the electrons in the outermost orbitals of an atom
b.a force that holds atoms together by unequally shared electrons
c.the substances before a chemical reaction occurs
d.a value that describes the relative strength with which an atom of an element attracts electrons to itself in a chemical bond.
e.a force that holds atoms together by sharing electrons
f.the substances after a chemical reaction occurs
g.a force that holds oppoitely charged atoms (or groups of atoms) together

Answer 1

Question 5
Mg + O2 → MgO
Blank 1: 2
Blank 2: 1
Blank 3: 2

Question 6
Al + O2 → Al2O3
Blank 1: 4
Blank 2: 3
Blank 3: 2

Question 7
MgO + CaS → MgS + CaO
Blank 1: 1
Blank 2: 1
Blank 3: 1
Blank 4: 1

Question 8
N2 + O2 → NO
Blank 1: 1
Blank 2: 1
Blank 3: 2

Question 9
Ti3N + MgO → Mg3N2 + Ti2O
Blank 1: 2
Blank 2: 3
Blank 3: 1
Blank 4: 3

Question 10
Answer: b — Example B would be faster because of a high surface area. (Higher surface area gives more exposed reactant for collisions, increasing rate.)

Question 11 (Column A → Column B)
1. products: f
2. reactants: c
3. covalent bond: e
4. electronegativity: d
5. ionic bond: g
6. polar covalent bond: b
7. valence electrons: a