Log inSign up for FREE
Library

CP Chemistry Chemical Reaction Basics (4/17/2025)

Last updated 6 months ago
12 questions
Required
2

  1. The skeleton chemical equation for the reaction between zinc metal and hydrochloric acid is shown. What change needs to be made in order to balance this reaction equation?
Zn + HCl → ZnCl2 + H2

2

Examine the following reaction, then identify the reactants and products:

H2O2 --> H2O + O2

  • O2
  • H2O2
  • H2O
  • Reactant(s)
  • Product(s)
Required
1

Is it possible to have a chemical reaction where there is only one reactant?

Required
1

If a gas is produced in a chemical reaction, does that gas count as a product?

Required
4

Balance the Equation(use the format of 2, 4, 1,3)

____N2 + ____O2 + ____H2O → ____HNO3

Required
3

Balance the Equation(use the format of 2, 4, 1)

____Al + _____Br2 → ____AlBr3

Required
0

Students want to gather evidence for the claim that the number of atoms before a chemical reaction is equal to the number of atoms after the chemical reaction. They decide to react vinegar and baking soda in a sealed plastic bag. Which of the following would provide the evidence the students need?

Required
2

Which of the following is true regarding the atoms involved in a chemical reaction?

Required
2

Match the nonmetal with its expected reaction product.

Draggable itemCorresponding Item
Oxygen with iron sulfide
Iron oxide and sulfur dioxide
Fluorine with potassium iodide
Potassium fluoride and iodine
Chlorine with sodium bromide
Sodium chloride and bromine
Required
2

Identify the reaction types based on these metals.

Draggable itemCorresponding Item
Sodium reacts with water
Produces sodium hydroxide and hydrogen
Iron with hydrochloric acid
Gives iron chloride and hydrogen gas
Calcium and sulfur
Results in calcium sulfide
Required
2

What is the total number of atoms in 2H2 + O2?

Required
2

In balancing 3H2 + O2 → 2H2O, which is the coefficient of O2?