Chemical Reactions and Diatomic Gases

The video tutorial covers four types of chemical reactions: double displacement, decomposition, synthesis, and single displacement. It explains the states of elements, the concept of diatomic gases, and provides detailed examples of decomposition and synthesis reactions, including balancing chemical equations. The tutorial also discusses single displacement reactions, highlighting the role of metals and non-metals in these processes.

Which of the following is a diatomic gas?

• Argon

• Neon

• Helium

• Oxygen

What is the result of a decomposition reaction?

• An element replaces another in a compound

• A compound forms from two elements

• A compound breaks into its elements

• Two compounds combine

In a decomposition reaction, what must be considered about the products?

• Their taste

• Their color

• If they are diatomic gases

• Their state of matter

What is the opposite of a decomposition reaction?

• Synthesis

• Double displacement

• Single displacement

• Combustion

In a synthesis reaction, what method is used to form the compound?

• Crossover method

• Balancing method

• Substitution method

• Decomposition method

What is the charge of sodium in a synthesis reaction with sulfur?

• +1

• -1

• +2

• -2

In a single displacement reaction, what happens when a metal reacts with a compound?

• The metal forms a new compound

• The metal is replaced by a non-metal

• The metal switches places with another metal

• The metal dissolves

What determines whether a single atom in a single displacement reaction is a metal or non-metal?

• Its taste

• Its color

• Its position in the periodic table

• Its state of matter

In a single displacement reaction, what happens if the lone atom is a non-metal?

• It remains unchanged

• It dissolves

• It switches places with another non-metal

• It forms a new compound with a metal

What is the formula for sodium chloride formed in a single displacement reaction?

• NaCl2

• Na2Cl2

• Na2Cl

• NaCl