Question
4.When lithium reacts with water the observations are fizzing (effervescence), moves quickly on the __ of the water, hydrogen gas given off
Answer
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Eloise
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Answer
The observations when lithium reacts with water are: fizzing (effervescence) indicating the production of hydrogen gas, rapid movement of lithium on the surface of the water, and the release of hydrogen gas.
Explanation
## Step 1:When lithium reacts with water, a couple of observations can be noted based on the characteristics and the usual behavior of the reaction. The reaction between lithium (Li) and water (H2O) forms lithium hydroxide (LiOH) and hydrogen (H2). This reaction can be represented by the following chemical formula:### **2Li(s) + 2H2O(l) -> 2LiOH(aq) + H2(g)** ## Step 2:Observation 1: Fizzing (Effervescence)Observation of effervescence or fizzing is noticed due to the production of hydrogen gas during the reactions. The hydrogen gas generated, when it escapes into the air, produces the visible bubbles or fizz.## Step 3:Observation 2: Rapid MovementLithium, being a lightweight element, reacts with water and during this reaction, it moves quickly on the surface of the water.## Step 4:Observation 3: Gas EmissionIn addition to fizzing which is the physical manifestation of gas being produced, hydrogen gas is detected through gas emission from the reaction site.