3. What is the best description of a material with a high specific heat capacity? (a) warms slowly (b) cools slowly (c) both warms and cools slowly Changes of State Some substances like water (or wax) can undergo observable changes through all three states of matter - solid liquid and gas. Melt change from ______ to liquid – Freeze- change from _______ to solid Evaporate change from __________ to ___________ – Condense change from ________ to ___________ – Sublimation- when gas changes directly to a ________ or a solid changes directly to a ________ Any pure substance can exist in all three states of matter 4. Complete the following table: Relating Heat to State Changes Change of Thermal Energy Initial Final State State change required (solid, Liquid, or (solid, Liquid or gas) (added or removed) gas) Melting Freezing Condensation Evaporation Sublimation (solid to gas) Sublimation (gas to solid) 5. Determine the phase change (process) that occurs when water vapour in the air touches a cold object and forms water drops solid carbon dioxide (dry ice) turns directly into a gas solid metal is heated so hot it begins to flow
3. What is the best description of a material with a high specific heat capacity? (a) warms slowly (b) cools slowly (c) both warms and cools slowly Changes of State Some substances like water (or wax) can undergo observable changes through all three states of matter - solid liquid and gas. Melt – change from ______ to liquid Freeze- change from _______ to solid Evaporate – change from __________ to ___________ Condense – change from ________ to ___________ Sublimation- when gas changes directly to a ________ or a solid changes directly to a ________ Any pure substance can exist in all three states of matter 4. Complete the following table: Relating Heat to State Changes Change of State Thermal Energy change required (added or removed) Initial (solid, Liquid, or gas) Final State (solid, Liquid or gas) Melting Freezing Condensation Evaporation Sublimation (solid to gas) Sublimation (gas to solid) 5. Determine the phase change (process) that occurs when water vapour in the air touches a cold object and forms water drops solid carbon dioxide (dry ice) turns directly into a gas solid metal is heated so hot it begins to flow
science_7_unit_3_topic_5-6_student_notes.docx