November 18, 2013 Agenda Roll PowerPoint titled: Matter and Heat Video: “Solids, Liquids, and Gases”

Subject Area: Matter and Heat EQ: In which direction does heat flow? Questions: What are the three states of matter? How does heat affect matter during a change of state(Physical Change)? How does heat affect matter during a chemical change?

Matter and Heat Have you ever eaten an ice cream on a hot day and it starts to melt before you can get it done? The ice cream will melt because the sun radiated energy to the air, which transfers energy to the ice cream. This will increase the kinetic energy in the ice cream making it start to turn to a liquid.

States of matter The states of matter are the physical forms in which a substance can exist. The state of a substance depends on the speed of its particles and the attraction between them. The three familiar states are solid, liquid, and gas.

Solid A solid is material that’s molecules are tightly compact and have a small amount of kinetic energy. Partner Question: What is a Solid? A solid is …

Liquid Liquid - Material where the molecules are spread out and are in a fluid flux, this state has more kinetic energy than a solid but not as much as a gas. Partner Question: What is a Liquid? A liquid is …

Gas Gas - Molecules of a substance are very spread out and have a high amount of kinetic energy. Partner Question: What is a Gas? A gas is …

Same substance in a different state Suppose you have the same substance of equal mass in all three different states. They would all be a different temperature. The substance with the most thermal energy would be a gas and the least would be the solid. Particles move faster and are spread out more are a gas.

Changes of State When you melt cheese to make a cheese dip you are changing a solid into a liquid. A change of state is the conversion of a substance from one physical form to another.

Changes of State A change of state is a physical change, this is a change that affects one or more physical properties of a substance without changing the identity of the substance. This change requires heat. Common changes are freezing, boiling, melting, and condensing. Partner Question: What is needed in order for a change in state to occur? In order for a change in state to occur you need …

Heat During Changes of State You can put an ice cube in a pan and put it on the stove. The ice would remain in a solid state until it reaches the temperature to change to a liquid, then it would continue being heated until it turns into a gas.

Heat During Changes of State The temperature of the ice will remain at 0°C until the energy has reached the point where will change to a liquid. Then it will remain a liquid rising in temperature until it will boil. It will remain at the boiling temperature until the energy reaches the point where it will change into steam and then continue to rise.

Heat and Chemical Changes Heat is also involved in chemical changes. Chemical changes are when one or more substances are changed into entirely new substances. A new substance is formed. This is the breaking and creating of bonds. In order to do this heat is either absorbed or released. Can you think of any way that heat is involved in a chemical change? Partner Question: What two changes require heat to happen? The two changes that require heat to happen are …

Heat and Chemical Changes Photosynthesis in plants is where water and carbon dioxide combine to form sugar and oxygen. Energy from the Sun must be absorbed to make this chemical reaction happen. Wood on fire is a chemical change where wood is being changed into ash (Carbon) which releases heat energy.

“Solids, Liquids, and Gases” What did you know? ________________________________ What did you learn? What do you want to know? _________________________________

Talking Punishment Today I have decided to break the rules of Mr. Elsmore’s classroom and have been granted the opportunity to write this paragraph. Unfortunately, it is possible that I have been granted this opportunity because of the actions of another student and not because of my actions. I will be forever indebted to that particular student or group of students for this wonderful opportunity to have to write instead of watching the video that was planned for today. I will make sure to let that student or students know how I appreciate this opportunity and show my gratitude by asking them to stop the breaking of the rules in Mr. Elsmore’s classroom. If you are the one responsible for this punishment please learn how to be mature enough to follow the five simple rules that Mr. Elsmore created to make this classroom an atmosphere of learning and kindness. If we have any more problems then we will get the wonderful opportunity to write this paragraph again and possibly loose the drawing at the end of the triad. All because I cannot or my fellow student cannot follow the rules. What a shame!!!

Review

Homework Chapter 9, Section 4 in the purple workbook. This is found on pages 70 – 72.