SCIENCE EXAM REVIEW

FORCE AND ENERGY

• Force, is a push or pull.
• Energy Transfer, for example, sun to plant to animal.
• Energy is neede for force.
• Radiant to chemical to mechanical.
• Everyone gets indirect radient energy from the sun.

MOTION

• Motion needs energy in order to have an action.
• Constant speed, at rest, increasing, decreasing.
• Calculate Work formula, W = F x D
• Average Speed Formula, Total Distance/Total Time.

ORGANIC VS. INORGANIC

• Organic - Carbon, Hydrogen, sulfur, Neon, Phosphorus
• Nitrogen, and Oxygen.
• Inorganic - Does not contain the main, Carbon and Hydrogen.

MOLECULES

• Proteins break into Amino Acid.
• Fats break into Fatty Acid, glycerol.
• Starch break into Sugar.
• Elements that chemically combind, to form
• a new substance.

PHYSICAL VS. CHEMICAL CHANGE

• Physical - A new 'physical' appearance.
• Chemical - A new substance
• Ice melting, Physical change.
• Digestive System, Chemical change.

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