Single Replacement Reactions Concepts

The video tutorial explains single replacement reactions, focusing on identifying elements and compounds involved. It emphasizes the importance of the activity series in determining reactivity and predicting whether a reaction will occur. The tutorial provides examples, such as copper and zinc, and barium and nickel phosphate, to illustrate these concepts. Additionally, it covers formula writing and the treatment of diatomic elements in reactions.

What is the first step in predicting products for single replacement reactions?

• Calculating the molar mass

• Balancing the chemical equation

• Determining the temperature

• Identifying the type of reaction

In a single replacement reaction, what does the element by itself replace in the compound?

• A like element

• A polyatomic ion

• A diatomic molecule

• A non-metal

Why does hydrogen act as a metal in single replacement reactions?

• It is a positive ion

• It has a high atomic number

• It is a diatomic molecule

• It is a noble gas

What must be true for a single replacement reaction to occur?

• The element by itself must be less reactive

• The element by itself must be more reactive

• The compound must be a gas

• The reaction must be exothermic

In the copper and zinc reaction example, why does no reaction occur?

• The reaction is endothermic

• Both elements are equally reactive

• Zinc is more reactive than copper

• Copper is more reactive than zinc

What is the correct formula for barium phosphate?

• BaPO4

• Ba2(PO4)3

• Ba3(PO4)2

• Ba(PO4)2

In the barium and nickel phosphate reaction, why do barium and nickel switch places?

• Both elements are non-reactive

• The reaction is reversible

• Nickel is more reactive than barium

• Barium is more reactive than nickel

What charge does barium have according to the periodic table?

• -2

• -1

• +2

• +1

What is the charge of phosphate as per the polyatomic ion reference sheet?

• -1

• -2

• -3

• +3

What should you be cautious about when writing formulas for single replacement reactions?

• Measuring the temperature

• Calculating the reaction rate

• Checking for diatomic elements

• Ensuring the reaction is balanced