Chemistry

Which type of radiation is most penetrating?

• beta
• gamma
• alpha
• positron

Alpha particles have a _____ charge.

• +2
• +4
• 0
• -2

True/False: Both fission and fusion reactions release large amounts of energy.

• true
• false

Bronsted-Lowry Base

• OH- producer
• H+ acceptor
• electron-pair donor

A neutralization reaction produces

• carbon dioxide and water
• a salt and water
• H and OH
• varies for every reaction

PV = nRT, n is

• pressure
• number of moles
• number of temperature
• R

Magnesium reacting with calcium chloride is a

• double substitution reaction
• combustion reaction
• single replacement
• neutralization

The Law of Conservation of Mass states that during a chemical reaction, total mass is

• created
• the same
• destroyed
• utilzied

Which of the following is a decomposition reaction?

• MgCO₃ --> MgO + CO₂ 
• SO₃ + H₂O --> H₂SO₄ 
• 2 Mg + O₂ --> 2MgO 

Which of the following reactions is a combustion reaction ? 

• MgCO3 + O2 → MgO + CO2  C3H8 + 5O2 → 3CO2 + 4H2O 
  MgCO₃ + O₂ → MgO + CO₂  
• C₃H₈ + 5O₂ → 3CO₂ + 4H₂O 
• 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂ 
• 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂