What particles make up the atomic structure?

• Protons, electrons, neutrons

• Protons, molecules, atoms

• Neutrons, atoms, elements

• Molecules, compounds, protons

What is the smallest particle of an element or compound?

• Atom

• Molecule

• Proton

• Electron

What state of matter has particles held together in a rigid structure?

• Gas

• Liquid

• Solid

• Plasma

How can matter change states?

• By adding or removing pressure

• By adding or removing electricity

• By adding or removing heat

• By adding or removing gravity

Which of the following is NOT a form of energy?

• Chemical

• Electrical

• Mechanical

• Atomic

What energy conversion occurs when fuel burns in the cylinder?

• Chemical to thermal

• Chemical to electrical

• Electrical to mechanical

• Thermal to mechanical

What is the amount of matter in an object called?

• Volume

• Mass

• Weight

• Size

What is the formula for the area of a circle?

• Pi × Diameter

• Pi × Radius squared

• Pi × Diameter squared

• Radius × Circumference

What does the compression ratio compare?

• Volume at top dead center and bottom dead center

• Volume of air to fuel

• Volume of the cylinder and the engine

• Volume of fuel at low and high pressure

What is the air/fuel mixture ratio in a typical internal combustion engine?

• 1:1

• 14.7:1

• 12:1

• 10:1