States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
Balance the following chemical equations
![**Chemical Reaction:**
\[ \_\_ \text{Ba(OH)}_2 (s) + \_\_ \text{NH}_4\text{SCN} (s) \rightarrow \]
**Observations:**
* [Text continues beyond the image and is not visible.]
This appears to be a partial chemical equation involving barium hydroxide (\(\text{Ba(OH)}_2\)) and ammonium thiocyanate (\(\text{NH}_4\text{SCN}\)), both in solid states. The substances likely react to form new products, which are not shown in the image.
**Note:** The blanks suggest that coefficients for balancing the equation are required.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Faf12c83e-c10e-4ddc-93fd-bf30160eaa19%2Fbf774d1d-848e-4640-a76a-cc0a683b0065%2Fkgjp9uc_processed.jpeg&w=3840&q=75)
![**Reaction 1**
\[\underline{\hspace{1cm}} \, \text{Ba(OH)_2 (s)} + \underline{\hspace{1cm}} \, \text{HCl (aq)} \rightarrow \]
### Observations:
*(No observations provided in the image)*
**Explanation:**
The image shows a chemical equation that is not fully balanced. It involves the reactants barium hydroxide (\(\text{Ba(OH)_2}\)) in solid state and hydrochloric acid (\(\text{HCl}\)) in aqueous state. The reaction is producing unspecified products.
In a typical scenario, this reaction would result in barium chloride (\(\text{BaCl}_2\)) and water (\(\text{H}_2\text{O}\)):
\[ \text{Ba(OH)_2 (s)} + 2 \, \text{HCl (aq)} \rightarrow \text{BaCl}_2 (aq) + 2 \, \text{H}_2\text{O} (l) \]
This is a type of acid-base reaction, wherein the acid (\(\text{HCl}\)) and the base (\(\text{Ba(OH)_2}\)) neutralize each other.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Faf12c83e-c10e-4ddc-93fd-bf30160eaa19%2Fbf774d1d-848e-4640-a76a-cc0a683b0065%2Fpgvb225_processed.jpeg&w=3840&q=75)
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