Chemistry Fall Final 2024

Front

What is the formula to calculate heat energy (Q) absorbed or released?

Back

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

Front

What is the specific heat capacity of water?

Back

4.18 J/g°C.

Front

What happens when two objects at different temperatures are placed in contact?

Back

Heat transfer occurs until thermal equilibrium is reached.

Front

What is thermal equilibrium?

Back

A state where two objects in contact reach the same temperature and no heat flows between them.

Front

What is the electron configuration of sodium (Na)?

Back

1s² 2s² 2p⁶ 3s¹.

Front

What are isotopes?

Back

Atoms of the same element with different numbers of neutrons, resulting in different atomic masses.

Front

What is the difference between atomic number and atomic mass?

Back

Atomic number is the number of protons in an atom, while atomic mass is the weighted average mass of an element's isotopes.

Front

How do you read a graduated cylinder?

Back

Read the bottom of the meniscus at eye level to determine the volume.

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the relationship between temperature and kinetic energy?

Back

Temperature is a measure of the average kinetic energy of the particles in a substance.