WorksheetsReactants and Products in Chemistry
Total questions: 15
Worksheet time: 15mins
Science whiz Zoe just mixed some chemicals in a beaker and showed the equation to Ethan and Abigail. They're scratching their heads! Can you help them figure out: Is the equation balanced?
yes
no
In a thrilling chemistry class experiment, Noah and Ava mixed various chemicals together. To their amazement, new substances started to form! What do we call these new substances that appear as a result of a chemical reaction?
products
reactants
coefficients
subscripts
Arjun, Aria, and William are having a heated debate in their chemistry class. They are discussing whether the equation H2+O2 →H2O follows the Law of Conservation of Mass. What do you think?
Yes, because the atoms are equal.
No, because more info is needed.
No, because there are more atoms in the product.
No, because there are more atoms in the reactant.
Nora, Henry, and Noah are having a debate. Nora thinks the equation is balanced, but Henry and Noah aren't sure. Who do you agree with?
I agree with Nora, the equation is balanced
I agree with Henry and Noah, the equation is not balanced
Identify which are the products and reactants
products
reactants
Dejuan and Ashton are conducting a chemistry experiment. They observe that in a balanced chemical reaction, the total mass of the products always equals the
a. molar mass of the reactants.
b. atomic mass of the reactants.
c. total mass of the reactants.
d. proportional masses of the reactants.
During a chemistry experiment, Dejuan and Nataly mixed two substances together. One of the substances underwent a change in the chemical reaction. This substance is called
a. a product.
b. a chemical.
c. a reactant.
d. an enzyme.
In a chemistry class, Julio and Katie are performing an experiment. They mix two compounds together and observe a synthesis reaction. This means that:
a. one of the compounds breaks down into at least two products.
b. a compound is decomposed by an electric current.
c. a compound burns in the presence of oxygen.
d. a new, more complex compound is formed.
During a chemistry experiment, Katie and Julio combined sodium and chlorine gas. What was the product of their synthesis reaction?
a. polyethylene.
b. carbon dioxide.
c. sodium chloride.
d. copper(II) chloride.
Za'kyrian and Harvey are conducting a chemistry experiment. They have 2H2O -->2H2+O2. How many moles of hydrogen gas are produced in this reaction?
a. 1 mol
b. 2 mol
c. 3 mol
d. 4 mol
In a chemical reaction, the substances that undergo change to form new substances are called:
Reactants
Products
Catalysts
Inhibitors
Which of the following is true about the Law of Conservation of Mass in a chemical reaction?
The mass of the reactants equals the mass of the products.
The mass of the reactants is greater than the mass of the products.
The mass of the reactants is less than the mass of the products.
The mass of the reactants is unrelated to the mass of the products.
In the reaction @@ ext{C}_6 ext{H}_{12} ext{O}_6 + 6 ext{O}_2 ightarrow 6 ext{CO}_2 + 6 ext{H}_2 ext{O}@@, what are the products?
C6H12O6 and O2
CO2 and H2O
C6H12O6 and CO2
O2 and H2O
During a chemical reaction, if a substance speeds up the reaction without being consumed, it is called a:
Reactant
Product
Catalyst
Inhibitor
In a combustion reaction, which of the following is typically a product?
Water
Oxygen
Hydrogen
Nitrogen
