Thermogravimetric Analyser (TGA) & Differential Scanning Calorimetry (DSC) Methods

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10 Questions

What is the main purpose of DSC analysis?

Measuring the heat of crystallization

Which component of a thermobalance affects the shape of the TG curve?

Sample Holder

What is the purpose of the heat transfer disk in DSC?

Differentiate endo or exo transitions at constant temperature

What type of DSC method keeps the temperatures of the sample and reference equal?

Power compensated DSC

Which thermal reaction is NOT an example measured by TG analysis?

Melting

What is the relationship between temperature increase (ΔT), heat absorbed (ΔQ), mass (m), and heat capacity (C) when a body is heated?

ΔT = ΔQ/mC

What property of a system do thermal analysis methods measure?

Dynamic relationship between temperature and mass

In thermogravimetric analysis (TGA), what property is recorded as a function of temperature or time?

Change in the weight of a substance

What is the principle behind differential scanning calorimetry (DSC)?

Measurement of energy absorbed or released by a material

What parameter does heat capacity define?

Amount of heat energy required to raise the temperature of a given quantity of matter by one degree Celsius

Learn about thermal analysis methods that measure the dynamic relationship between temperature and properties of a system. Understand the principles of heat absorption and mass changes in response to temperature variations.

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