Unit 3 Review Fall 23

Front

What is the chemical name for MgO?

Back

Magnesium Oxide

Front

Which elements typically form cations?

Back

Metals, such as A and B in the context of the quiz.

Front

What type of reaction is represented by the equation Zn + H₂SO₄ → ZnSO₄ + H₂?

Back

Single Replacement Reaction

Front

In the reaction 2C₂H₁₈ + 13O₂ → 4CO₂ + 18H₂O, what is needed to convert 450 grams of C₂H₁₈ to grams of CO₂?

Back

The molar mass of C₂H₁₈.

Front

What is the formula for copper(I) sulfate?

Back

Cu₂SO₄

Front

What is a cation?

Back

A positively charged ion that is formed when an atom loses one or more electrons.

Front

What is the difference between a single replacement reaction and a double replacement reaction?

Back

In a single replacement reaction, one element replaces another in a compound, while in a double replacement reaction, the ions of two compounds exchange places.

Front

How do you calculate the molar mass of a compound?

Back

By summing the atomic masses of all the atoms in the compound's formula.

Front

What is the significance of balancing chemical equations?

Back

It ensures that the law of conservation of mass is obeyed, meaning the number of atoms of each element is the same on both sides of the equation.

Front

What is the role of oxygen in combustion reactions?

Back

Oxygen acts as an oxidizing agent, allowing the fuel to react and release energy.