I do not have enough context to answer questions about a specific lesson. Could you please rephrase the questions or provide more details?

1. Types of reactions and reactivity

2. 1. Describe the trends found in the periodic
table with respect to:
a) atom size
b) ionization energy
c) Electronegativity

3. •In a composition reaction, also known as
a synthesis reaction, two or more
reactants combine to form a single
product.
•This type of reaction is represented by
the following general equation.
A + X --> AX

4. •Formation of binary compound from its
elements
2 Mg(s) + O2(g) --> 2 MgO(s)
S8 (s) + 8 O2(g) --> 8 SO2(g)
2 Na(s) + Cl2(g) --> 2 NaCl(s)
•Reactants can also be compounds.
CaO(s) + H2O(l) --> Ca(OH)2(s)
SO2(g) + H2O(l) --> H2SO3(aq)

5. In a decomposition reaction, a single reactant
undergoes a reaction that produces two or more
simpler substances.
Decomposition reactions are the opposite of
composition reactions.
They are represented by the following general
equation.
AX --> A + X
Decomposition reactions take place only when
energy is added.

6. a)Decomposition of Binary Compounds
* compound breaks up into its elements
2 H2O (l) --> 2 H2 (g) + O2 (g)
2 HgO (s) --> 2 Hg (l) + O2 (g)
a)Decomposition of Metal Carbonates
* when heated, metal carbonates decompose into a metal
oxide and carbon dioxide
CuCO3 (s) --> CuO (s) + CO2 (g)

7. c) Decomposition of Metal Chlorates
* when heated, metal chlorates
decompose into a metal chloride
and oxygen
2 KClO3 (s) --> 2 KCl (s) + 3O2 (g)

8. *The equation represents an incomplete
chemical reaction.
Al + Cl2 -->
What is the product of the chemical
reaction?
A.Al2Cl3
B.AlCl
C.AlCl2
D.AlCl3

9. *The chemical equation represents the
reaction between sodium (Na) and
oxygen (O2).
4 Na + O2 -->
What is the product of this reaction?
A.2 Na2O
B.2 NaO
C.2 NaO2
D.2 Na2O2

10. •In a single replacement reaction, one
element replaces a “similar” element in a
compound.
•Single replacement reactions can be
represented by the following general
equation:
Element + Compound --> Element +
Compound
A + BC --> B + AC
•“Similar” = metals replace metals
= nonmetals replace nonmetals
Exception: Hydrogen replaces metals and
metals can replace hydrogen

11. •Activity series is a list of elements organized
according to the ease with which the elements
undergo certain chemical reactions.
•For metals, greater activity means a greater
ease of lose of electrons (forming cations).
•For nonmetals, it means a greater ease of
gaining electrons (making anions).
•Use the provided list to determine if any given
SDR will occur.

12. Metals
Name Symbol
Lithium Li+
Sodium Na+
Potassium K+
Rubidium Rb+
Barium Ba+2
Strontium Sr+2
Calcium Ca+2
Decreasing activity
↓
reacts with water and acids
Magnesium Mg+2
Aluminum Al+3
Manganese Mn
Zinc Zn+2
Chromium Cr+3
Iron Fe
Cadmium Cd+2
Cobalt Co+2
Nickel Ni+2
reacts with acids replacing
hydrogen

13. •Examples:
1. Cu(s) + AgNO3(aq) -->
2. Cl2(g) + NaBr(aq) -->
3. Mg(s) + HCl(aq) -->

14. •In double-replacement reactions, the positive ions
of two compounds exchange places to form two
new compounds.
•Double replacement reactions can be represented
by the following general equation:
AX + BY --> AY + BX

15. •Examples:
1. KI (aq) + Pb(NO3)2 (aq) -->
2. Mg(C2H3O2)2 (aq) + Na3PO4 (aq) -->

16. •In a combustion reaction, a substance combines
with oxygen (O2), releasing a large amount of energy
in the form of light and heat.
•Most combustion reactions involve the reaction of a
carbon-based compound with oxygen. The products
are carbon dioxide and water.
•They are represented by the following general
equation.
X + O2 --> CO2 + H2O

17. •Examples:
1. CH4 + O2 -->
2. C8H18 + O2 -->
3. C6H12O6 + O2 -->

18. *You have one minute to answer these two
questions concerning today’s lesson.
*What was the most important thing you learned?
*What is one question you would still like answered?