Reaction Types, Balancing Reactions, and Stoichiometry

What is the name for the solid formed during a reaction?

• Precipitate
• Gas
• Compound
• Aqueous 

The following is what type of reaction:
PbCl₂ + AgNO₃ → Pb(NO₃)₂ + AgCl

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement

Tags

NGSS.MS-PS1-2

The following is what type of reaction:
NH₃ + HCl  → NH₄Cl

• Synthesis
• Decomposition
• Single Replacement Replacement
• Double Replacement Replacement

Tags

NGSS.MS-PS1-2

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

Balance this equation:
 2Li + Cl₂ → LiCl

• 2Li + Cl₂ → 4LiCl₂
• 2Li + Cl₂ → LiCl₂
• 2Li + Cl₂ → 2LiCl
• 2Li + 2Cl₂ → 2 LiCl₂

Tags

NGSS.MS-PS1-5

2H₂   +   O₂  →  2H₂O
How many moles of water can be produced if 8 moles H₂ reacts with 8 moles O₂?

• 4 moles
• 8 moles
• 16 moles
• 2 moles

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The limiting reactant

• slows the reaction down
• is used up first
• is the reactant that is left over
• controls the speed of the reaction

Tags

NGSS.MS-PS1-5

What is the molar mass of (NH₄)₂CO₃ ?

• 144 g
• 138 g
• 96 g
• 78 g

Tags

NGSS.MS-PS1-1

C₅H₁₂O (l) combusts in air.  How many grams of water are produced when 56.44 grams of C₅H₁₂O combusts?

• 69.21 g H₂O
• 55.44 g H₂O
• 20.55 g H₂O
• 35.46 g H₂O

Tags

NGSS.HS-PS1-7

_________________ are the elements and compounds that enter into a chemical reaction (on the left side of the arrow).

• Polymers
• Bonds
• Reactants
• Products

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5