![Page 1: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/1.jpg)
Chapter 6: Energy
Section 3: Chemical Energy
Notebooks – Title and Date
![Page 2: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/2.jpg)
• Atoms are the smallest particle of matter
• Atoms can form molecules
• Molecules will form matter
• What is matter?
Anything that has mass and takes up space
![Page 3: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/3.jpg)
Atoms form molecules
Two atoms of Hydrogen and one of
Oxygen form a water molecule
![Page 4: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/4.jpg)
• https://www.youtube.com/watch?v=hc0E
tPPpZUU
• Atoms and Molecules - Chemistry For
Kids | Mocomi Kids
![Page 5: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/5.jpg)
**Atoms forming
molecules are
united by bonds.
Chemical Energy
is energy stored in
the bonds between
atoms.
When bonds are
broken, energy is
released
![Page 6: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/6.jpg)
** In our lives, there are chemical bonds
being created and destroyed
constantly, releasing or absorbing
chemical energy that can be used for
different purposes.
![Page 7: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/7.jpg)
1) What is a chemical reaction?
**a process in which one or more substances are changed into others.
In a chemical reaction molecules or compounds are broken down and new ones are formed.
![Page 8: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/8.jpg)
1) What is a chemical reaction?
• Reactants – hydrogen and oxygen
• Products –water (what is being formed)
![Page 9: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/9.jpg)
2)Explain how energy and chemical bonds are
related.
What type of energy you find in chemical bonds,
kinetic or potential?
Two atoms are united by a
chemical bond.
There is chemical energy
stored in the bonds
between atoms.
chemical energy is a type
of potential energy
![Page 10: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/10.jpg)
3) Explain what happens to the energy in our muscles.
• When you eat, the food provides chemical energy that will remain stored in your body.
• This energy will be used by your cells to perform many different functions
• The muscles in your body transform some of this chemical energy into kinetic energy and heat when they move.
• This is an example of energy transformation
![Page 11: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/11.jpg)
4)What are endothermic and exothermic
reactions?
A chemical reaction that absorbs heat is called an endothermic reaction.
A chemical reaction that releases heat is called an exothermic reaction.
![Page 12: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/12.jpg)
35) Explain Photosynthesis and
why
photosynthesis one of the most
important endothermic
chemical reactions on Earth?
![Page 13: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/13.jpg)
**Photosynthesis
• Sunlight ( radiant or light energy) strikes the leaves
of plants
• Chemical reactions will occur with carbon
dioxide and water, in the presence of light, and
oxygen and sugar molecules ( food) will be
formed
• During this process the radiant energy in the
sunlight was transformed into chemical energy in
the sugar.
• the sugar is food for all living organisms
This is an example of energy transformation
![Page 14: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/14.jpg)
• Photosynthesis is an
endothermic reaction, because
absorbs heat from the sun.
![Page 15: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/15.jpg)
What is Rate of Reaction ?
• Rate of reaction is how fast or how slow a chemical reaction happens.
• Chemical reactions can occur at different rates.
![Page 16: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/16.jpg)
What are the two ways to change the rate
(speed) of a chemical reaction?
• Adding a catalyst or changing the
temperature
• When you raise the temperature you
accelerate a chemical reaction
![Page 17: Chapter 6: Energy061851f72b23d802adaa-d56582058559818728a814bdd94ad99a.r54… · • Sunlight ( radiant or light energy) strikes the leaves of plants • Chemical reactions will occur](https://reader033.vdocuments.site/reader033/viewer/2022052000/6011e1db1c18884984750630/html5/thumbnails/17.jpg)
2) Catalyst
• A catalyst is a substance that changes the rate of a chemical reaction without any permanent change to its own structure.
• The catalyst doesn’t participate in the chemical reaction