Chemical Bonding and Reactions

Where are reactants located in a chemical equation?

• on the right side of the yield arrow

• on the left side of the yield arrow

What does the Law of Conservation of Mass state?

• Matter cannot be created or destroyed.

• In a closed system, the mass and substance of an element or compound will not change.

• In a chemical reaction, the total mass of the reactants is equal to the total mass of the products.

• Chemical bonds are created through the rearrangement of atomic mass while conserving atomic energy.

Tags

NGSS.HS-PS1-7

Identify the type of chemical reaction:

Cl₂ + 2KBr → 2KCl + Br₂

• single replacement

• double replacement

• synthesis

• decomposition

• combustion

Identify the type of chemical reaction:

2NaOH + CuSO₄ → Na₂SO₄ + Cu(OH)₂

• single replacement

• double replacement

• synthesis

• decomposition

• combustion

Identify the type of chemical reaction:

Al₂S₃ → 2Al + 3S

• single replacement

• double replacement

• synthesis

• decomposition

• combustion

Identify the type of chemical reaction:

Zn + S → ZnS

• single replacement

• double replacement

• synthesis

• decomposition

• combustion

Identify the type of chemical reaction:

C₄H₁₂ + 7O₂ → 6H₂O + 4CO₂

• single replacement

• double replacement

• synthesis

• decomposition

• combustion

In an endothermic reaction, energy is _____.

Tags

NGSS.HS-PS1-4

In an exothermic reaction, energy is _____.

Tags

NGSS.HS-PS1-4

Which of these speeds up a chemical reaction?

• reactant

• inhibitor

• equilibrium

• catalyst

Tags

NGSS.HS-PS1-5