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
Examine the following reaction, then identify the reactants and products:
H2O2 --> H2O + O2
O2
H2O
H2O2
Reactant(s)
Product(s)
Is it possible to have a chemical reaction where there is only one reactant?
If a gas is produced in a chemical reaction, does that gas count as a product?
Balance the Equation(use the format of 2, 4, 1,3)
Balance the Equation(use the format of 2, 4, 1)
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?
Which of the following is true regarding the atoms involved in a chemical reaction?
Match the nonmetal with its expected reaction product.
| Draggable item | arrow_right_alt | Corresponding Item |
|---|---|---|
Chlorine with sodium bromide | arrow_right_alt | Iron oxide and sulfur dioxide |
Oxygen with iron sulfide | arrow_right_alt | Potassium fluoride and iodine |
Fluorine with potassium iodide | arrow_right_alt | Sodium chloride and bromine |
Identify the reaction types based on these metals.
| Draggable item | arrow_right_alt | Corresponding Item |
|---|---|---|
Calcium and sulfur | arrow_right_alt | Produces sodium hydroxide and hydrogen |
Sodium reacts with water | arrow_right_alt | Gives iron chloride and hydrogen gas |
Iron with hydrochloric acid | arrow_right_alt | Results in calcium sulfide |
What is the total number of atoms in 2H2 + O2?
In balancing 3H2 + O2 → 2H2O, which is the coefficient of O2?