Final Quiz

What is a compound?

• A substance made up of two or more elements chemically bonded
• A mixture of two or more substances
• A substance that can be physically separated
• An element that has been altered

Which of the following is a characteristic of an element?

• It can be broken down into simpler substances
• It consists of only one type of atom
• It can exist in multiple phases (solid, liquid, gas)
• Both B and C

What is the chemical formula for water?

• H₂O
• H₂O₂
• O₂H
• OH₂

Which type of change involves the formation of a new substance?

• Physical change
• Chemical change
• Reversible change
• Energy transformation

What happens to particles during a physical change?

• They change their arrangement but not their identity
• They form a new substance
• They are destroyed
• They become charged particles

What is the process of liquid turning into gas called?

• Freezing
• Vaporization
• Condensation
• Sublimation

Which of the following best describes energy?

• The ability to do work
• The speed of motion
• A force that acts on objects
• A measure of mass

What type of energy is stored in food?

• Kinetic energy
• Thermal energy
• Chemical energy
• Gravitational potential energy

What type of wave can travel through a vacuum?

• Sound wave
• Light wave
• Water wave
• Seismic wave

What is the unit of energy?

• Newton
• Joule
• Pascal
• Watt