chem reaction quiz 1

magnesium metal reacts with oxygen from air during heating

took 2-3 seconds to ignite, then burst into small, very bright white light, then became brittle and white

Magnesium metal is added to hydrochloric acid...

made some mist, then when splint was added it got sucked in with a big pop - splint went out quickly

A small chunk of ammonium carbonate is heated......(3 products are formed!)

white powder quickly melted into a clear bubbling liquid that smelled strongly, the pH strip turned blue (9.5pH) with the splint going out when submerged

Solid calcium carbonate is mixed with acetic acid solution to produce a gas, water and an aqi leous salt

white powder dissolved and bubbled

Solid zine shot is added to a solution of copper (II) chloride...

light blue liquid in which the metal turned black, then red and the liquid got darker

Sodium phosphate solution is added to a solution of copper ions...

clear light blue liquid recieves an icy light blue cloud at the top which can be mixed in but not really dissolved

An unknown molarity of sodium hydroxide solution is titrated with a known mass of potassi im hydrogen
phthalate (KHP = KHC,H,0a)...

powder dissolves into clear liquid and drips until it appears pink

A solution of potassium permanganate is added to an acidified solution (H,SO,) of hydrogen peroxide solution. The products are manganese (Il) sulfate, potassium sulfate, oxygen gas and water molecules.

clear flask is turned pink but purple slowly fades with mixing until it turns clear with slight bubbles on top

Ethyl alcohol (C,H,OH) is combusted in the presence of oxygen...

clear, low light errupts from the liquid and burns evenly for about 20 seconds until there is a tiny condensation at the bottom of the dish