Table of Contents
What will happen to the balloon when you mix the tabs with water?
When you drop a tablet into water it forms sodium citrate, water and carbon dioxide which is the bubbles of gas you see. The bicarbonate of soda reacts with the citric acid, this is an acid – base reaction just like we see when we add vinegar to baking soda.
What is the Alka-Seltzer experiment?
How does it work? Alka-Seltzer reacts with an acid to make carbon dioxide gas. When you added the tablet to the vinegar or water, you heard fizzing and saw bubbling. If the reaction is going faster, then it will take less time to finish and will fizz more vigorously.
What happened to the balloon placed in hot water?
In hot water, the Balloon inflated because of hot air molecules, and in cold water, the Balloon deflated because of cold air molecules. The hot air molecules are less dense in weight and tend to rise and occupy more space. That’s the reason the hot air molecules travel inside the Balloon and make it expand.
What is the effect of putting the balloon in cold water on the volume of the gas?
(Gases always expand when they’re warm – the heat gives the gas energy to spread out more). The expanding gas blows up the balloon. When you put the bottle into cold water, the air cools down again. Cool air hasn’t got as much energy, so it shrinks – and the balloon shrinks with it.
How does Alka-Seltzer change the temperature of water?
With the alka-seltzer and water, the temperature should decrease inside the cup, meaning heat was absorbed in the reaction (endothermic). The cups will feel cold on the outside as well. With the hydrogen peroxide and yeast, the cup will feel warm, indicating an exothermic reaction where heat is released.
Why does Alka-Seltzer foam and bubble when dissolved in water?
Why is this? As the tablets dissolve, the sodium bicarbonate splits apart to form sodium and bicarbonate ions. The bicarbonate ions react with hydrogen ions from the citric acid to form carbon dioxide gas (and water). This is how the bubbles are made.
What gas fills the balloon in this experiment?
As the carbon dioxide gas fills the balloon, the balloon inflates. The more gas that is created, the larger the balloon will inflate.
Why did the balloon inflate when placed in hot water?
Putting the bottle in hot water causes the air molecules inside to heat up and begin taking up more space (thermal expansion), causing air to enter the balloon and inflate it. When you move the bottle into the cold water, the air molecules cool back down and take up less space (thermal contraction).
What happened to the balloons when you put it in hot water and put it in a basin with ice cubes?
What happened to the balloon when placed it in a cold water?
The expanding gas blows up the balloon. When you put the bottle into cold water, the air cools down again. Cool air hasn’t got as much energy, so it shrinks – and the balloon shrinks with it.
What happened to the balloon when it is placed in the hot water in cold water?
Why does an Alka-Seltzer tablet dissolve faster in hot water?
The second thing learned is the reason why the Alka-Seltzer dissolves in hot water faster than in cold water. The reason is because higher temperatures have higher kinetic molecular energy.
Is Alka-Seltzer in water a chemical change or physical?
| LAB | Alka Seltzer and water | Food coloring and water |
|---|---|---|
| Physical or Chemical Change | Chemical Change | Physical Change |
| WHY? | Fizzes, gas produced (new substance), irreversible, | NO new substance created, only one physical change |
When Alka-Seltzer reacts with water is heat released or taken in?
What happened to the size of the balloon when the temperature is increased?
In a balloon when the temperature increases, the individual gas molecules that you can’t see but that make up gases start moving really fast. When the molecules are moving fast under higher temperatures, they run into the sides of the balloon more often making the balloon bigger.
Why does a balloon inflate in hot water and deflate in cold water?
What is the reaction between Alka Seltzer with water?
Alka Seltzer tablets easily dissolve in water. Water releases hydrogen ions that can react with the base inside the Alka Seltzer tablet, sodium bicarbonate. When the sodium bicarbonate reacts with the hydrogen ions, carbon dioxide forms, which causes the bubbles you see when you drop an Alka Seltzer tablet in water.
What is the relationship between water and Alka seltzers?
When they enter water, the chemicals are released and can react. In Alka-Seltzer, the citric acid mixes with the base, bicarbonate, to form carbon dioxide bubbles.
What is the chemical reaction between Alka Seltzer and water?
• Alka-seltzer tablets contain citric acid (an acid) and sodium bicarbonate (a base.) When you drop the tablet in water, they mix and react, forming carbon dioxide gas which bubbles up to the surface of the water. If the water and Alka-seltzer are in a tightly sealed container, the gas will expand rapidly.
What happens when the Alka Seltzer mixed with the water?
What happens when Alka-Seltzer is added to water? drop the tablet in water, they mix and react, forming carbon dioxide gas which bubbles up to the surface of the water. If the water and Alka-seltzer are in a tightly sealed container, the gas will expand rapidly.