Chemistry Quiz 4

How do you calculate Enthalpy of a reaction?

• ΔH = ΔH_products - ΔH_reactants

• ΔT = q / mC

• ΔG = ΔH -TΔS

• E = mc²

Endothermic reactions feel

• warm
• cold

 _?_  is the amount of energy required to raise the temperature of 1 gram of any substance 1^oC.

• Specific heat
• A calorie
• Thermal energy
• Conduction

What type of reaction is shown in the reaction pathway?

• endothermic reaction

• exothermic reaction

If the enthalpy ter (ΔH) is negative the reaction is ____.

• Endothermic
• Exothermic
• Neutral

The SI unit of heat and energy is the __________.

• calorie
• heat
• joule
• watt

How much KNO₃ solute is saturated at 40 degrees?

• 75

• 55

• 65

• 85

At what temperature can you fully dissolve 60g of KNO₃?

• 27

• 30

• 37

• You cannot determine this

when you __________ a solution, you make it less concentrated, usually by adding more liquid

• concentrate

• dilute

• stir

• mix

If the solution contains the maximum amount it can dissolve by a given amount of solvent, it is ___________

• Supersaturated

• Unsaturated

• Solubility

• Saturated