Types of Chemical Reactions

Which family of elements is characterized by having eight valence electrons?

What charge does an aluminum ion carry after losing three electrons?

Which of the following statements about protons and electrons is correct?

Which of the following elements is the most reactive non-metal?

What determines the charge of the nucleus of an atom?

How many valence electrons do halogens have?

What is the ion name and symbol for a sulfur ion that has gained two electrons?

Which statement best defines a multivalent element?

Which of the following compounds is covalent?

What is the primary characteristic of metals on the periodic table?

Which element has an atomic number of 55?

What term describes the horizontal rows of elements on the periodic table?

What are the four chemical families discussed in Science 9?

How many protons does Selenium have?

What is the relationship between atomic number and electrons in a neutral atom?

Which element has the following atomic configuration: 34 protons, 45 neutrons?

Types of Reactions

Synthesis: Two elements combine to form one compound (A + B → AB)
Decomposition: A compound breaks down into two or more elements or simpler compounds (AB → A + B)
Single Replacement: One element replaces another element in a compound (AB + C → AC + B or AB + C → CB + A)
Double Replacement: The positive ions of two compounds switch places (AB + CD → AD + CB)
Acid-Base Neutralization: An acid and a base react to form a salt and water (HA + BOH → H₂O + BA)
Combustion: A substance reacts with oxygen to produce carbon dioxide and water (CxHy + O₂ → CO₂ + H₂O)

Identification of Reactions

Na3PO4 + 3KOH → 3NaOH + K3PO4: Double replacement
MgCl2 + Li2CO3 → MgCO3 + 2LiCl: Double replacement
C6H12 + 9O2 → 6CO2 + 6H2O: Combustion
Pb + FeSO4 → PbSO4 + Fe: Single replacement
CaCO3 → CaO + CO2: Decomposition
P4 + 3O2 → 2P2O3: Synthesis
2RbNO3 + BeF2 → Be(NO3)2 + 2RbF: Double replacement
2AgNO3 + Cu → Cu(NO3)2 + 2Ag: Single replacement
C3H6O + 4O2 → 3CO2 + 3H2O: Combustion
2C5H5 + Fe → Fe(C5H5)2: Synthesis
SeCl6 + O2 → SeO2 + 3Cl2: Double replacement
2MgI2 + Mn(SO3)2 → 2MgSO3 + MnI4: Double replacement
2SO3 → 2S + 3O2: Decomposition
2NO2 → 2O2 + N2: Decomposition

Acid-Base Reactions

Acids: HCl, H2SO4, HNO3, CH3COOH
Bases: NaOH, KOH, Ca(OH)2, NH3, H3PO4
Acid-base reaction examples: HCI + NaOH → NaCl + H2O, H2SO4 + KOH → K2SO4 + H2O, HNO3 + NH3 → NH4NO3
products of acid-base reaction: Salt + Water

Lewis Diagrams & Diagrams of lonic Compounds

Lewis diagrams: show only an atom's valence electrons, also called Lewis Structure or electron dot diagram
Bohr diagrams show all electrons an atom has

This quiz covers the six main types of chemical reactions, including synthesis, decomposition, single replacement, double replacement, acid-base neutralization, and combustion. Understanding these reactions is crucial for students studying chemistry, as it forms the foundation for more advanced topics. Test your knowledge on identifying and classifying these reactions!