Chemical and Physical Changes

Energy stored in the nucleus of an atom

• Chemical Energy

• Thermal Energy

• Nuclear Energy

• Mechanical Energy

What is the smallest particle of an element that retains its chemical properties?

• Molecule

• Atom

• Ion

• Compound

A thermometer measures _______ energy

• Kinetic

• Potential

• Thermal

• Chemical

Light to Chemical

• Photosynthesis

• Respiration

• Combustion

• Fermentation

An _______ is the smallest unit of matter.

• Molecule

• Atom

• Compound

• Element

Chemical Change Definition

• The substance remains the same with no change in properties.

• The substance turns into something new with different properties.

• The substance can be easily reversed to its original form.

• The substance changes color but retains its original properties.

True/False: Atoms can be seen with the naked eye.

• True

• False

• Only with a microscope

• Only in certain conditions

Which of these is a homogeneous mixture?

• a) Saltwater

• b) Oil and water

• c) Trail mix

• d) Sand and water

Mixtures can be separated by physical means.

• True

• False

• Only with chemical reactions

• Only with heat

What type of energy is associated with the motion of objects?

• Potential Energy

• Kinetic Energy

• Thermal Energy

• Chemical Energy