Chemistry Quizizz Review

The SI unit of heat and energy is the __________.

• calorie
• heat
• joule
• watt

Tags

NGSS.HS-PS3-4

What type of reaction is shown in the reaction pathway?

• endothermic reaction
• exothermic reaction

Tags

NGSS.HS-PS1-4

N₂ +  3H₂ −->  2NH₃ 
How many moles of ammonium are produced when 3 moles of nitrogen react with hydrogen?

• 6 moles Ammonium
• 1.5 moles ammonium
• 9 moles ammonium
• 9 moles hydrogen

Tags

NGSS.HS-PS1-7

 _?_  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

As 120 g of hot milk cools in a mug, it transfers 20, 000 J of heat to the environment. What is the temperature change of the milk? The specific heat of milk is 2.6 J/g·°C. (Q=mcΔT)

• 64 °C
• 1.56 °C
• 640 °C
• cannot be determined

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NGSS.HS-PS3-1

NGSS.HS-PS3-4

If 100 g of aluminum at 145ºC gains 6,800 J of heat, what is the final temperature (T_final) of the aluminum? Aluminum has a specific heat of 0.897 J/gºC. (Q=mcΔT)

• -69°C
• 0.52°C
• 221°C

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NGSS.HS-PS3-1

NGSS.HS-PS3-4

Entropy increases from solid, liquid to gas. Why?

• Molecular disorder increases
• Molecular randomness decreases
• Molecules are more energetic
• Molecules are more reactive

Tags

NGSS.MS-PS1-4

Which interval represents the heat of reaction for the reaction?

• A
• B
• D
• E

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NGSS.HS-PS1-4

NGSS.HS-PS3-1

NGSS.HS-PS3-4

Entropy is a measure of:

• order
• disorder

Enthalpy is energy absorbed or relased during a chemical reaction as

• light.
• heat.
• sound.
• pressure.

Tags

NGSS.HS-PS1-4