Reactants and Products in Chemistry

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

Tags

NGSS.MS-PS1-5

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

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

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.

Tags

NGSS.MS-PS1-5

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

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Identify which are the products and reactants

a

b

reactants

products

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

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.

Tags

NGSS.MS-PS1-5

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.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

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.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-1

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.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

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

Tags

NGSS.HS-PS1-7