Forms of Energy

All energy comes from either the main 2 forms, Kinetic or Potential energy. So the forms of energy shown below can either be classified as kinetic or potential energy. Copy down everything you see here, and draw a picture or example of each one, showing that type of energy:

1) Nuclear/Atomic Energy is stored in the nucleus of an atom and released when you split atoms.

2) Chemical energy is a form of potential energy that is stored in organisms, food, gasoline, or chemical bonds of molecules.

3) Electrical energy is produced by electrons moving through a wire; it's a natural and man-made energy form.

4) Mechanical energy is the energy in the motion of objects. All moving objects have mechanical energy.

5) Sound energy is produced when a solid, liquid, or gas vibrates. Sound energy travels out as waves in all directions.

6) Thermal energy is the energy of molecular movement. The faster the molecules move, the more thermal energy is present. Heat is the transfer of thermal energy. So when thermal energy moves from object to object, we feel it as heat.

7) Light (radiant) energy is a form of energy produced by the sun and lamps; it's visible to the human eye

Click on this link to get a summary of these energy types- SUMMARY NOTES- Energy and its Types

Here are other pictures describing the different forms of Energy. Click on them to see it bigger:

*Here are two links that discuss what Energy is and the forms of Energy:
EIA- Energy explained
EIA- U.S. Primary Energy Consumption

*If you want to read more about K.E. and P.E., read the information on this website. It also identifies different types of energy:
EbWin Kids Zone: Types of Energy

Understanding the difference between Physical and Chemical changes

Class, here are more notes to help you understand the difference

between Physical and Chemical changes. 

•Physical changes:

1)Appearance can change, but substance keeps the same identity.

2)You can always go back to the original substance.

•Chemical changes:

1)Substance formed is new. New molecular arrangement.

2)You can not go back to the original substance (not reversible). 

This This is another way of thinking about the differences:

During a chemical change, there is a change in the chemical composition of the original molecules. New elements or compounds form at the end, with a different arrangement of atoms. Bonds break and reform! But in a physical change the molecules stay the same, they just move farther apart or closer. Look at the picture below to see the differences: 

(notice how the arrangement of atoms changed when water became hydrogen peroxide)

Here are videos to help you understand the differences
too. Click on here- 
BrainPop- Property Changes



Also, click on here to watch several videos- 
Physical and Chemical changes

Remember these 2 important concepts:

The Law of Conservation of Mass:

During a chemical reaction, the mass of what you end with is
always the same as the mass of what you start with.

 Chemical reaction:

occurs when you start with one molecule and turn 

it into a new one. Chemical bonds are made or 

broken in order to create this new molecule. 

Finally, here is a great article that details the difference between both types of changes- The Ice-Cube Tray and the Frying Pan

Solutions and Solubility

Class, here are some pictures and videos on Solutions and Solubility. Watch them and compare with your class notes. Hope it helps. 

A hot solvent can usually hold more solute than a cool solvent can (temperature increase).

But if a hot saturated solution is cooled slowly, sometimes the excess solute remains dissolved for a period of time (it doesn't settle yet).

Such a solution is said to be supersaturated, because it contains more than the normal amount of solute that can be dissolved at a lower temperature (it went over its limit).

The following are Summary Notes for this topic. Feel free to look at it and print it if you want:

Summary Notes on Solutions, Solubility

Topics on Matter Test, Videos, Periodic Table Game

Here are the topics on next week's Test. You can click on the picture to see it bigger.

Here are some pictures from my slides that will help you too. Again, click on them to see it bigger:

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This is an excellent Review Video on Matter and its Properties:

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Here is another Video on Elements, Compounds, and Mixtures:

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Periodic Table game-- Sort these Elements into metals, metalloids, and nonmetals. It's a fun game!:
BrainPop Game- Sortify Elements

This is a BrainPop video on the Periodic Table:
BrainPop- Periodic Table of Elements


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This is an online version of the Periodic Table:
Ptable

Periodic Table Vocabulary (for LAB too)

Class, here are some important Vocabulary words to know about the Periodic Table:


malleable- can be bent into various shapes.

brittle- can break easily

reflective luster- shiny

dull- not shiny

ductile- can be made into wires

isotopes- atoms of the same element that have different number of neutrons

noble gases- elements in the last group of the Periodic Table (Group 18) that are very stable and don't react with other elements. They exist on their own.


Click on the following box to read more about what Metalloids are:

Here's a picture of the Periodic Table. Click on it to see it bigger. **If you can't see it too well because it's blurry, you can see a clearer picture of this Periodic Table by clicking on this link --> Periodic Table diagram

Periodic Table, Analyzing an Element

The Periodic table:  
•Organizes and classifies the elements in columns and rows, based on their properties
•Elements in the same group (column) react in similar ways. So they have similar properties.
•Elements on the periodic table are divided into metals, nonmetals,and metalloids.
•Each element is different (has it's own atomic number) and has unique properties.
•Altogether the elements are arranged in sequence by their atomic number.

These pictures shown in class indicate what the numbers and symbols mean for each element found on the Periodic Table. Study this, you will be tested on it!

Check out this cool song on the Periodic Table!:

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And this is the video shown in class on the Periodic Table:

StudyJams Video- Periodic Table

States of Matter Diagrams

Class, here are images showing the 3 types of Matter and how they are different. They are the same ones from class today. Click on them to make it bigger.

For the classes making the Foldable, here is an example of what the outside and inside of the Foldable should look like:

Here is a fun video that goes over the States of Matter: Flocabulary- States of Matter

Here is another video: StudyJams- Changes of Matter

Topics for this week's test on Matter

You can click on the picture to see it bigger:

*Remember, you can go to StudyJams and review a lot of videos there on the topic of Matter. After clicking on the link below, click on "See All Topics" and then click on Matter:

StudyJams- Videos on Matter

StudyJams- Video on Mixtures

BrainPop- Compounds and Mixtures

H.W.- Solubility QUIZ 2

Class, click on this link for tonight's H.W.  This is the 2nd QUIZ on Solubility. Remember to write out the QUESTIONS and ANSWERS in your notebook --> SOLUBILITY QUIZ 2 (Glencoe)

Solubility INTRO

Here is the link for tonight's H.W.--> Solubility QUIZ 1 (Glencoe)

Here, the solubility of a gas increases when you increase the pressure above solution.

Here, the solubility of a gas increases when you decrease the temperature.

Physical and Chemical Properties & Changes (plus Videos)

Here is a BrainPopJr video from class on Physical and Chemical changes. Just click on here- BrainPopJr Video. 

Here's another video on Physical vs Chemical changes:

In addition, here is a picture I was showing you in class comparing Physical and Chemical properties. Remember, a physical property is a characteristic of matter that you can measure or observe. And a chemical property is the ability of a substance to change into something NEW, by reacting with certain things.

Compounding Compounds Webquest

Class, here are 2 websites to help you with today's Webquest on Compounding Compounds:

http://www.endmemo.com/chem/chemsearch.php

http://encyclopedia.kids.net.au/page/li/List_of_compounds

You can Google the answers too

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H.W.

IXL - 7th Grade Science, D.2 

Elements vs Compounds, and Atoms too

Class, here is another video that explains the differences between Elements and Compounds. It also talks about molecules. Take a look at it to understand better.

This is the MakeMeGenius video we saw in class on Elements vs Compounds too:

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Here is a snapshot from the MakeMeGenius video comparing Elements and Compounds:

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This StudyJam videos below also go over Elements vs Compounds & Atoms too:

StudyJams- Elements vs Compounds

StudyJams- Atoms: Protons, Neutrons, Electrons

The diagram below shows that Molecules make up Elements and Compounds:

If you have time, play this game online. You build molecules and learn how they behave when they're solids, liquids, and gases:

Molecularium

Waves Review

To learn more about Wave properties, check out this video:
BBC- Waves Activity

Here are some pictures to help you study for the Test on Waves:

To learn more about Waves, check out this video:
BrainPop- Waves

And to learn more about the Electromagnetic Spectrum and Light waves, check out this video:
BrainPop- Electromagnetic Spectrum


Topics on the Waves Test:
- Sound Waves, including properties of Sound
- Light Waves
- Mechanical vs Electromagnetic waves
- Transverse vs Compressional waves
- Parts of a Transverse wave, including frequency and amplitude

Wave creation

On a long white piece of paper, create 2 waves with a pencil and a ruler. One with a high frequency, one with a low frequency. Measure the wavelength and amplitude of each wave and record it in cm, using a ruler. Put the paper in a vertical position

    On your two waves, label and measure its:

•Crest

•Trough

•Wavelength (with its measurement)

•Amplitude (with its measurement)

•Frequency (measure the # of crests)

Then record this information under your drawings too. In addition, answer these questions:

      2) Describe what type of waves you drew.

      3) As the frequency of a wave increases, it’s wavelength _______________. 

      4) Where do you find these types of waves in real-life? Give 3 examples. 

Here is an example of what it looks like:

Energy WEBQUEST

Look at these websites in the order shown and answer all the questions for each video in your notebook. Write and answer the questions:

- A) 

1) What is Energy? Define it.

2) What are 3 sources of energy?

3) Can energy be created? Explain.

- B)   Look at the MakeMeGenius video below:

   

List 5 types of Energy and describe how each one works:

Types of Energy:
1)
2)
3)
4)
5)

- C) Click here Children's University:

1) Play the "What is Energy?" game. Match all the types of energy correctly.

2) Answer this Question- Why do we need energy? Explain.

3) Complete the QUIZ. How many did you get right?

D) To learn more about Kinetic and Potential energy, watch this video too: 

Then complete the following Graphic Organizer in your notebook:

H.W.- Watch the BrainPop Video on the Forms of Energy and answer the QUIZ Review Questions in your notebook.

Density QUIZ

Take this online Quiz on Density. There are 20 Q’s. Do

the first 10 tonight. Write out the questions and answers:

Density QUIZ

Online QUIZZES- Physical and Chemical Properties

Class, take this first QUIZ on Physical and Chemical Properties. Write out the Questions and Answers:
QUIZ- Physical and Chemical Properties



For extra credit, do the following QUIZ as well. Write out the Questions and Answers:
QUIZ- Properties and Changes of Matter

Electricity online QUIZ

Class, take this QUIZ on Electricity. Write out the Questions and Answers. Just click below:

SoftSchools QUIZ- Electricity

Conduction, Convection, and Radiation

Class, this is the video we saw in class on Conduction, Convection, and Radiation:

Here are some diagrams showing the difference between the 3 different types of heat transfer. You can click on them to see it bigger: