
This book was created and published on StoryJumper™
©2014 StoryJumper, Inc. All rights reserved.
Publish your own children's book:
www.storyjumper.com




“Hello John! Do you anything about chemical
reactions?”
“Unfortunately, I do not know much about
chemical reactions.”
“Don’t worry John! I’ll teach you everything you
need to know about chemical reactions!”
“That would be wonderful Ann!”


“Let’s begin with physical and chemical
changes. In a physical change, the substances
that are present remain chemically the same
and no new substances are formed. Physical
changes are also very easy to reverse.”
“Okay, that’s fairly simple to understand. Can
you give me an example?”




“Sure! An example of a physical change would be crumpling a
piece of paper. An ice cube melting or clay being molded into a
new shape are also considered to be physical changes.”
“So what is a chemical change?”





“I was just getting there! A chemical change is when elements,
compounds, or molecules combine to form a new substance. The
starting materials change into an entirely different substance or
substances. It is important to remember that the new substance
that is formed has a different chemical composition.”
“How would you know that a chemical reaction took place?”




“There are six signs that tell us when a chemical reaction
has occurred. A change in color and in temperature infers
that a new substance was formed. The formation of a gas
and the creation of a solid also illustrates a chemical
reaction happened. Lastly, light being emitted and odor
being released are signs of a chemical reaction!”
“Now I know the difference between a physical and
chemical change!”








“Awesome! Now let’s talk about Endothermic and
Exothermic reactions! An Endothermic reaction is when
energy is taken in during a chemical reaction.”
"What would be an example of an Endothermic reaction?"




“Great question! An example would be when water and
ammonium nitrate are mixed together.”
“Would it be an endothermic reaction if two chemicals are mixed
and their temperature drops?”
“Yes! You are correct! Let me tell you what an exothermic
reaction is! An exothermic reaction is when energy is given out
during a chemical reaction.”





“So when two chemicals mix, would their temperature rise?”
“They would! You’re very smart John! Can you think of an
example of an exothermic reaction?”
“How about condensation of rain from water vapor?”
“Yes, it would be! I believe we can move on to my favorite topic,
word equations!”




“Word equations are the simplest form of a chemical equation that
provides the names of the reactants and products in chemical
reactions. Let’s look at an example.”


"In this equation, sodium reacts with water to form
sodium hydroxide and hydrogen gas."
"Writing equations seems to be very simple!"
"It is very easy! However, this leads me to explain
skeleton equations."



“Skeleton equations replaces the names of the reactants and
products in a word equation with formulas. However, it is
important to remember that they will be needed to balanced.”
"What would a symbol equation look like?”
“Great question! Here is an example!”


"How would you balance this equation?"


"You have to balance the equation so that it has the
same number of atoms of each element on each side.
This can be done by putting the correct numbers in front
of the coefficients.”
"What are coefficients?"
"A coefficient is the number that normally appears at the
beginning of a term in a chemical equation."
"The balanced equation will look like this!"



"I notice that there is an equal amount of the elements
on each side of the equation."
"Good! That's how you know if the equation is
balanced!There are also other chemical reactions that I
am going to teach you!"
"This is getting a little complicated."
"I will make it as simple as possible. Let's begin with
synthesis reactions! A synthesis reaction is the
combination of two or more substances that form a
compound.”



enter text here
"Are synthesis reactions endothermic or exothermic?"
"Synthesis reactions are endothermic.The most important
synthesis reaction is photosynthesis."
"Okay. What does a synthesis reaction look like?"
"The general form for this kind of reaction is: A + B → AB"
"Can I please have an example?"
"Of course!"


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This book was created and published on StoryJumper™
©2014 StoryJumper, Inc. All rights reserved.
Publish your own children's book:
www.storyjumper.com




“Hello John! Do you anything about chemical
reactions?”
“Unfortunately, I do not know much about
chemical reactions.”
“Don’t worry John! I’ll teach you everything you
need to know about chemical reactions!”
“That would be wonderful Ann!”


“Let’s begin with physical and chemical
changes. In a physical change, the substances
that are present remain chemically the same
and no new substances are formed. Physical
changes are also very easy to reverse.”
“Okay, that’s fairly simple to understand. Can
you give me an example?”




“Sure! An example of a physical change would be crumpling a
piece of paper. An ice cube melting or clay being molded into a
new shape are also considered to be physical changes.”
“So what is a chemical change?”



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