Chemistry Semester 1 Pre-Test On Level

Which of the following is the energy of motion?

• Potential Energy

• Kinetic Energy

• Thermal Energy

• Chemical Energy

______ Energy is stored in the bonds of chemical compounds and is released during chemical reactions.

• Electrical

• Thermal

• Chemical

• Kinetic

The law of conservation of energy states that energy cannot be created or destroyed; it can only ______ forms.

• increase

• decrease

• change

• eliminate

Which of the following is an example of conduction?

• Boiling water

• A metal spoon getting hot in a hot liquid

• Heat from the sun reaching Earth

• A fan blowing air.

Convection is the transfer of heat through the movement of ______.

• A) Solids

• B) Fluids

• C) Electromagnetic waves

• D) Vacuum

Radiation is the transfer of energy through ______.

• Direct contact

• Movement of fluids

• Electromagnetic waves

• Solids

What is thermal equilibrium?

• When two objects are at different temperatures

• When two objects reach the same temperature and heat transfer stops

• When heat is continuously transferred between two objects

• When two objects are in motion.

In which model did J.J. Thomson propose that atoms consist of a positively charged 'soup' with negatively charged electrons scattered throughout?

• Rutherford’s Nuclear Model

• Bohr’s Model

• Thomson’s Plum Pudding Model

• Quantum Mechanical Model

Fill in the blank: In Bohr’s Model, electrons orbit the nucleus in specific energy levels or ______.

• shells

• clouds

• soups

• particles

Which model describes electrons as wave functions providing probabilities of finding an electron in a particular location around the nucleus?

• Dalton's Model

• Thomson's Model

• Rutherford's Model

• Quantum Mechanical Model