Phy Sci, Monday Exit Ticket, 2.18.19

_P₄+_O₂ →  _P₂O₃

• 3 P₄+1 O₂ → 2 P₂O₃
• 1 P₄+1 O₂ → 2 P₂O₃
• 1 P₄+ 3 O₂ → 2 P₂O₃
• 1 P₄+ 2 O₂ → 3 P₂O₃

_K + _Cl₂ →_KCl

• 2 K + 16 Cl₂ → 8 KCl
• 2 K + 1 Cl₂ → 2 KCl
• 3 K + 4 Cl₂ → 3 KCl
• 1 K + 1 Cl₂ →1 KCl

What type of reaction occurs between an element and a compound?
Zn + 2HCl --> ZnCl₂ + H₂

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement

What kind of reaction is this:
2H₂ + O₂ --> 2H₂O

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement

Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?

• double replacement 
• decomposition 
• combustion 
• single replacement

In the reaction 2 K + Cl₂ → 2 KCl, what are the reactants?

• 2 K

• 2 K and Cl₂

• Cl₂

• 2 KCl

How many atoms in all are in a molecule of serotonin?

C₁₀H₁₂N₂O

• 22
• 24
• 25
• 4

Is the following chemical equation balanced or unbalanced: P₄ + 3O₂ --> 2P₂O₃

• balanced

• unbalanced

The value of equilibrium constant K_c depends only on:

• Temperature

• Pressure

• Concentration

• Density

Such reactions which continue in both directions are called:

• Irreversible reactions

• Reversible reactions

• Non-reactive reactions

• dynamic reactions

Tags

NGSS.HS-PS1-6