hello tarryn
When a piece of copper is placed in magnesium chloride solution, no reaction will occur because copper is less reactive than magnesium. Copper will remain unchanged in the solution.
When tin is placed into a magnesium sulfate solution, no reaction occurs since tin is lower in the reactivity series than magnesium. Tin does not displace magnesium from its salt solution.
When magnesium ribbon is placed in hydrochloric acid, a chemical reaction occurs. The magnesium reacts with the hydrochloric acid to form magnesium chloride and hydrogen gas. This reaction is exothermic, meaning it releases heat energy.
Phenolphthalein in a solution containing magnesium hydroxide would remain colorless as it does not change color at a basic pH, where magnesium hydroxide is present. Phenolphthalein changes color in acidic solutions, not basic ones.
A white precipitate of silver chloride forms on the plastic strip due to a chemical reaction between the chloride ions present in the plastic and the silver ions in the silver nitrate solution. The silver chloride can be removed from the plastic by rinsing it with water to reveal a visible change on the strip.
Hypotonic Solution
It gets wet.
The light bulb would not light up when placed in a solid sodium chloride because the solid does not conduct electricity. However, in an aqueous solution of sodium chloride, the solution is able to conduct electricity due to the presence of free ions, allowing the light bulb to light up.
Isotonic solution
Nothing. There would be no gradient between the cell and the solution.
Water is the solvent.
The reaction is:Mg + 2 HCl = MgCl2 + H2(g)You will see a release of hydrogen if a lighted match is placed near the test tube - you hear a click.