Law of mass conservation
This experiment tests the statement that during a chemical reaction the total mass of the system is conserved, even if chemical changes occur in the solution.
Cosa imparano gli studenti
La scienza alla base di questo esperimento
What happens to the total mass of a system during a chemical reaction? Do chemicals change their weight during reactions? Lavoisier's law of mass conservation states that the mass of reactants is equal to the mass of products.
Attrezzatura utilizzata
- Dropping pipette with teat — 1441.50+5448.00
- 2 × Glass beakers 50 ml — 1118.15
- Spatula, double ended — 5460.34
- Electronic balance — 2219.30
Sostanze chimiche e reagenti
- Silver nitrate 0.1 M — R:34-50/53 S:26-45-60-61
- Potassium iodide 0.1 M — R:42/43-36/37/38 S:26-38
Note sulla sicurezza
Domande per gli studenti
- Describe what happens to the solution.
- What is the total weight of the two beakers plus the combined solution?
Cosa aspettarsi
<p>When weighed again, it will be noted that the weight of the whole new system is equal to the weight of the initial system.</p><p>This confirms that the total mass is conserved, even though a chemical reaction has occurred.</p>
Smaltimento
Dispose of the solution into the acids and bases waste container.
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