Reactants and Products

In the reaction AB-----> A + B reactant AB has 12g and product B has 5g. How many grams should product A have?

• 17g

• 2g

• 7g

• None of the above

Tags

NGSS.MS-PS1-5

In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams should reactant B have? 

• 4g

• 5g

• 9g

• 14g

Tags

NGSS.MS-PS1-5

A chemical reaction between Hydrogen and Oxygen produces water. If 2g of Hydrogen and 4g of Oxygen react together, how much water is produced?

• 2g

• 4g

• 6g

• Not enough information to answer

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

12g of Carbon react with 16g of Oxygen, how much carbon monoxide (CO) is formed? 

• 28 g

• 4g

• 30g

• 12g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

• the product is doubled

• the product is half the mass of the reactants

• the mass is the same

• the mass changes depending on the reaction

Tags

NGSS.MS-PS1-5

What is the left part of a chemical equation called?
2H_{2 +} O₂ --> 2H₂O

• Reactants

• Products 

• Yields 

• Chemical Equation 

a substance that is created during a chemical reaction

• reactant

• product

• subscript

Tags

NGSS.MS-PS1-2

Arrow in equation means

• product

• reactant

• yield

Tags

NGSS.MS-PS1-2

In chemical reactions, what does the principle of conservation of mass mean?

• Matter is not created or destroyed.

• The total mass of the reactants is greater than the total mass of the products.

• The total mass of the reactants is less than the total mass of the products.

• Matter is not changed.
  

Tags

NGSS.MS-PS1-5

The products of a reaction have the same ________as the reactants.

• molecule

• atoms

• subscripts

• coefficients

Tags

NGSS.MS-PS1-5