September 08, 2015Agenda

1. PowerPoint titled: States of Matter(Glued in on page 7)

2. Video: “Solids, Liquids, and Gasses”

Please enter the class, get your science notebook out, and sit quietly with your

arms on top of the table with your arms folded!

You might get tickets!!!

Subject Area: States of Matter

EQ: What happens when thermal energy is put in or taken away from a substance?

Questions:

1. What are the three states of matter?

2. How does heat affect matter during a chemical change?

States of Matter

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.

Question:

1. 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.

Question:

1. 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.

Question:

1. What is a Gas?A gas is …

Same substance in a different stateSuppose 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.

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.

Changes of State

Question:

1. 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.

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 During Changes of State

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?

Question:1. What two changes require heat to happen?

The two changes that require heat to happen are …

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.

Heat and Chemical Changes

“Solids, Liquids, and Gases”What did you know?1. ________________________________2. ________________________________3. ________________________________What did you learn?1. ________________________________2. ________________________________3. ________________________________What do you want to know?1. _________________________________2. _________________________________3. _________________________________

Talking PunishmentToday 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!!!