2022-23 Unit 2 P & C Changes Week 1

When one or more physical properties of a substance are changed and can usually be done

• Physical Change

• Molecules

• Chemical Change

• Thermal Energy

When one or more substances are changed into a new substance and can not be separated easily.

• Physical Change

• Molecules

• Chemical Change

• Thermal Energy

Group of atoms bonded together, represents the smallest unit of chemical compounds that can take part in chemical reactions.

• Physical Change

• Molecules

• Chemical Change

• Thermal Energy

Physical breakdown of large pieces of food into small pieces.

• Physical Change

• Molecules

• Mechanical Digestion

• Thermal Energy

Energy stored in chemical bonds. Like glucose (sugar).

• Physical Change

• Molecules

• Mechanical Digestion

• Chemical Energy

Energy carried by an electromagnetic wave (light).

• Radiant Light

• Molecules

• Mechanical Digestion

• Chemical Energy

The total energy of motion in the particles of a substance, heat energy.

• Radiant Light

• Thermal Energy

• Mechanical Digestion

• Chemical Energy

Breaks down food into absorbable units that enter the blood for distribution to body cells.

• Radiant Light

• Thermal Energy

• Digestion System

• Chemical Energy

Substance formed by the chemical combination of two or more elements.

• Radiant Light

• Thermal Energy

• Digestion System

• Compound

To change completely in appearance or form; to make into something else.

• Transform

• Thermal Energy

• Digestion System

• Compound