10/9 & 10/10 - 8th Grade Agenda Learning Objective: Learn the difference between evaporation and condensation Collect HW: Reading & Notetaking p.57-58 Class work: Chap 2 & 3 Study Guide Textbook Reading p.98-101 Hw: Reading & Notetaking p.60- 61 Reminder: Chap 2 & 3 Test on 10/14 & 10/15

Daily Reflection Prompt: What is the difference between evaporation and condensation?

The resistance of a liquid to flowing is called vi_______ scosity Which has higher viscosity? Syrup Water

What is surface tension? Surface ten______ is the result of an inward pull among the mole_______ of liquid that brings the molecules on the surface closer together. Surface tension enables the ins______ to walk on the calm surface of a pond. cules ect

What is the temperature where a Solid turns into a Liquid called? Melting Point

What is the temperature where a Liquid turns into a Gas called? Boiling Point

Liquid water changing into water vapor is an example of va__________ porization

When vaporization takes place only on the surface of the liquid the process is called eva__________ poration

When vaporization takes place inside a liquid as well as at the surface, the process is called b_______ oiling

What happens to the Boiling Point when you go to higher elevation? Boiling Point Depends on Air Pressure In the city of Denver (1600 meters above sea level, water boils at 95 degrees Celsius) That is why you have to boil longer at higher elevation.

Co_________ occurs when gas loses enough thermal energy to become a liquid. ndensation Occurs when a gas loses enough thermal energy to become a liquid: i.e. breathing onto a mirror.

limation Sub_________ occurs when the surface particles of a solid gain enough energy to become a gas. When the surface particles of a solid gain enough energy to become a gas without becoming a liquid.

What happens to Volume when Pressure is increased?

What happens to Volume when Pressure is decreased? This is Boyle’s Law

Which cylinder has more pressure Which cylinder has more pressure? What is happening to the volume of the cylinder with more pressure?

What is Boyle’s Law? When the pressure of gas increased, the volume decreases. When pressure decreased, the volume increases

What is happening to the volume as the temperature increases? This is Charles’s Law

Which cylinder has higher temperature Which cylinder has higher temperature? What is happening to the volume of the cylinder with higher temperature? -65 C 250 C

What is Charles’s Law When temperature increases, the volume of gas increases