Products and Reactants

How many reactants are in A + B ---> C ?

• 1

• 2

• 3

• 4

How many products are in A + B ---> 2C

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

What is law of conservation of mass ?

• Mass of reactants = mass of products

• mass of reactants > mass of the products

• mass of the reactants < mass of the products

• mass of reactants > 2 mass of the reactants

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

If reactants' mass is 18g , what is the mass of the products ?

• 15

• 36

• 81

• 18

Tags

NGSS.MS-PS1-5

What are the products of the chemical reaction pictured?

• CH₄ and CO₂

• CH₄ and O₂

• CO₂ and 2 H₂O

• O₂ and H₂O

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Consider the chemical equation CH₄ + 2 O₂ → CO₂ + 2 H₂O. In this equation, CH₄ is a

• product
• reactant
• displacement

Tags

NGSS.MS-PS1-5

What is the left part of a chemical equation called?
H_{2 +} O → H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

Tags

NGSS.MS-PS1-5

What is the right part of a chemical equation called?
H_{2 +} O → H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

2H₂ + O₂ ----> 2H₂O What is the product?

• ------>
• 2H₂O
• 2H₂+ O₂

Tags

NGSS.MS-PS1-5

Identify the reactant(s) and product(s) of the reaction.

• All three are reactants and none are products.
• Hydrogen and water are the reactants, and oxygen is the product.
• Water and oxygen are the reactants, and hydrogen is the product.
• Hydrogen and oxygen are the reactants, and water is the product.