Question

which statements are true concerning a substance with a high specific heat capacity? select one or more: an example substance is aluminum metal. an example substance is water. the substance cools down slowly after heating. the substance easily gets hot when heat is applied.

Explanation:

• Water: Water has a high specific heat capacity (\(c = 4186\space J/(kg\cdot^{\circ}C)\)), while aluminum has a relatively low specific heat capacity (\(c = 900\space J/(kg\cdot^{\circ}C)\)).
• Cooling down slowly: A substance with high specific heat capacity stores more heat. When it starts to cool (lose heat), since it has more heat stored per unit mass and per unit temperature change (\(Q = mc\Delta T\)), it will cool down slowly.
• Easily getting hot: A substance with low specific heat capacity (\(c\)) will have a large \(\Delta T\) (temperature change) for a given \(Q\) (heat input) and mass \(m\) (\(\Delta T=\frac{Q}{mc}\)). A high - \(c\) substance will not easily get hot as \(\Delta T\) is small for the same \(Q\) and \(m\).

Answer:

B. An example substance is water, C. The substance cools down slowly after heating.