Changes in Matter Science Chapter 2 Grade 5. Chapter 2 – Vocabulary Physical Change Chemical Change Evaporation Condensation Sublimation Reactant Product.

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