Changes in Matter Science Chapter 2 Grade 5
Dec 23, 2015
Changes in Matter
Science Chapter 2
Grade 5
Chapter 2 – Vocabulary
• Physical Change• Chemical Change• Evaporation• Condensation • Sublimation
• Reactant• Product• Chemical Equation
Physical Change
• A change• Matter keeps the same
chemical properties• A change in size, shape,
volume, state of matter• No new product
Chemical Change
• A change• A matter changes into a
different kind of matter• New substance• Different properties• Light, heat, smell, color
change are signs of chemical change
Evaporation• Process• Physical change• Molecules spread out
more• Heat/ energy is added• From liquid to gas
(water to vapor)• Opposite reaction to
condensation
Condensation
• Process
• Physical change
• Molecules get closer together
• Heat/ energy is taken away
• From gas to liquid (vapor to water)
• Opposite reaction to evaporation
• Condensation forms clouds
Sublimation
• Process
• Physical change
• Molecules spread out
• Heat/ energy is added
• From solid directly to gas (dry ice to vapor)
Reactant• A substance• Used in a chemical reaction• What you begin with• The “problem”
Reactants
Product
• A substance• Made in a chemical reaction• What you get in the end• The “answer”
Product
Chemical Equation• Statement
• Chemical symbols
• Shows what happens in a chemical reaction
• Left side: Reactant
• Middle: Arrow
• Right side: Product
Chapter 2 – Vocabulary
• Physical Change• Chemical Change• Evaporation• Condensation • Sublimation
• Reactant• Product• Chemical Equation