Spring 2025 Final Study Guide

Which energy source is not used to turn a turbine to generate electricity?

• Solar energy
• Hydropower
• Wind energy
• Geothermal energy

Tags

NGSS.MS-PS3-4

Which of the following is a nonrenewable energy source?

• Hydroelectric
• Coal
• Wind
• Solar

Which of the following best describes a polar molecule?

• A molecule with highly symmetrical geometry 

• A molecule with equally distributed charge resulting in no overall dipole moment

• A molecule with an uneven distribution of charge resulting in partial positive and negative ends 

• A molecule with no covalent bonds 

What is the definition of molarity (M) in chemistry?

• The amount of solute in grams dissolved in 1 liter of solvent 

• The concentration of solute particles in a solution 

• The moles of solute dissolved in 1 liter of solution 

• The volume of solute in milliliters dissolved in 1 liter of solvent 

Which of the following solutions has the highest concentration? 

• 900 mL of a 2.4 M LiCl 

• 0.25 L of a 3.1 M Kool-Aid 

• 200 mL of a 4.3 M NaOH 

• 0.4 L of a 1.0 M Glucose 

What does a 2.5 M solution mean? 

• 2.5 mole of solute is dissolved in 1 kilogram of solvent. 

• 2.5 gram of solute is dissolved in 1 liter of solution. 

• 2.5 mole of solute is dissolved in 1 liter of solution. 

• 2.5 gram of solute is dissolved in 100 mL of solvent. 

Tags

NGSS.HS-PS1-5

What is solubility? 

• different materials placed together but keeping their own properties 

• a mixture in which substances spread out evenly and will not settle 

• the degree to which a material will dissolve in another substance 

• the substance in a solution that has the greatest amount 

Which of the following factors ONLY affects the solubility of a gas solute in solution? 

• Pressure
• Particle Size

• Agitation

• Temperature

Which of the following is a thermochemical equation? 

• C (s) + O₂ (g) -> CO₂ (g)    

• 2SO₃ (g) -> 2SO₂ (g) + O₂ (g) 

• CO₂ (g) + 2H₂O (l) -> CH₄ (g) + 2O₂ (g)  

• 2H₂O(l) + 571.6 kJ -> 2H₂ (g) +  O₂ (g) 

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What is NOT a sign that energy has been transferred in an exothermic reaction? 

• Increase in temperature
• Change in color
• Formation of a gas
• Decrease in temperature

Tags

NGSS.MS-PS3-5