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HC Unit 6 Ions Test

HC Unit 6 Ions Test

Assessment

Flashcard

Chemistry

12th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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16 questions

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1.

FLASHCARD QUESTION

Front

What is the definition of enthalpy (ΔH)?

Back

Enthalpy (ΔH) is a measure of the total heat content of a system, used to quantify the energy changes during a chemical reaction or phase change.

2.

FLASHCARD QUESTION

Front

What is the formula to calculate heat transfer (q) in a substance?

Back

q = m × c × ΔT, where m is mass, c is specific heat capacity, and ΔT is the change in temperature.

3.

FLASHCARD QUESTION

Front

What is specific heat capacity?

Back

Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1 °C.

4.

FLASHCARD QUESTION

Front

How do you calculate the final temperature of a mixture of two substances?

Back

Use the principle of conservation of energy: m1 × c1 × (T_final - T_initial1) + m2 × c2 × (T_final - T_initial2) = 0.

5.

FLASHCARD QUESTION

Front

What is the specific heat capacity of water?

Back

The specific heat capacity of water is approximately 4.18 J/g°C.

6.

FLASHCARD QUESTION

Front

What is the significance of a positive ΔH value?

Back

A positive ΔH value indicates that a reaction is endothermic, meaning it absorbs heat from the surroundings.

7.

FLASHCARD QUESTION

Front

What is the significance of a negative ΔH value?

Back

A negative ΔH value indicates that a reaction is exothermic, meaning it releases heat to the surroundings.

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