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ChemThink #8: Chemical Reactions

1. In a chemical reaction, the starting material is called the _______.
2. The materials left in the end are called the _______.
3. In reaction 1, a bond is being _______.
4. In reaction 2, a bond is being _______.
5. In reaction 3, the bonds are being _______ and then _______.

What do you notice in all three chemical reactions?

- An _______ is placed between them, indicating a chemical change has taken place.
- Chemical reactions always involve _______ reactants and _______ products or both.
- In chemical reactions, there can never be a _______ loss of atoms when the reaction is over.

Sagot :

GinnyAnswer
Sure, let's go through the questions one by one and answer them based on the information provided:

1. In a chemical reaction, the starting material is called the [tex]$\qquad$[/tex] -

The starting material in a chemical reaction is called the reactant.

2. The materials left in the end are called the [tex]$\qquad$[/tex]

The materials left at the end of a chemical reaction are called the product.

3. In reaction 1, a bond is being [tex]$\qquad$[/tex] forme! [tex]$\qquad$[/tex] -

In reaction 1, a bond is being formed.

4. In reaction 2, a bond is being [tex]$\qquad$[/tex] Ponds ore brake _.

In reaction 2, a bond is being broken.

5. In reaction 3, the bonds are being [tex]$\qquad$[/tex] Band bowen then formed

In reaction 3, the bonds are being broken and then formed.

6. What do you notice in all three chemical reactions?

An arrow is placed between them, indicating a chemical change has taken place.

7. Chemical reactions always involve [tex]$\qquad$[/tex] reactants [tex]$\qquad$[/tex] Products [tex]$\qquad$[/tex] [tex]$\qquad$[/tex] matter, or both.

Chemical reactions always involve reactants and products.

8. In chemical reactions, there can never be [tex]$\qquad$[/tex] [tex]$\qquad$[/tex] loss [tex]$\qquad$[/tex] when the reaction is over.

In chemical reactions, there can never be mass loss when the reaction is over.

Putting all the answers into the blanks, we get:

1. In a chemical reaction, the starting material is called the reactant.
2. The materials left in the end are called the product.
3. In reaction 1, a bond is being formed.
4. In reaction 2, a bond is being broken.
5. In reaction 3, the bonds are being broken and then formed.
6. What do you notice in all three chemical reactions?
An arrow is placed between them indicating a chemical change has taken place.
7. Chemical reactions always involve reactants and products.
8. In chemical reactions, there can never be mass loss when the reaction is over.
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