I need help on these questions plz help me :c
31. A substance that will change hydroxyapatite, Ca5(PO4)3OH, to fluorapatite, Ca5(PO4)3F.
32. A weak organic acid. Define weak organic acid. Common name, chemical name, chemical formula required.
33. Something containing titanium (IV) oxide.
34. An alkaline earth hydroxide. Chemical formula, common name and chemical name required.
35. A compound composed of an alkali metal and a halogen. Common name, chemical name, and chemical formula required.
36. A mixture which could be separated using paper chromatography. Define paper chromatography. Common name required.
37. Something containing a transition element from period 4. Identify the transition element on the back of the note card.
38. A nonmetal. Define nonmetal. Common name and chemical formula required.
39. An electrolyte. Define electrolyte. Common name, chemical name, chemical formula required.
40. Something containing L-carvone or D-carvone. Identify which one you have. What characteristic does it impart to the substance which distinguishes it from the item you did not bring in.
41. The solid product of the reaction between aqueous solutions of calcium chloride and sodium carbonate. Balanced equation, chemical formula and common name required.
42. An aqueous solution of a nonelectrolyte. Identify the solute and solvent by common name
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Off the top of my head; you can look up Wikipedia:
31. A substance that will change hydroxyapatite, Ca5(PO4)3OH, to fluorapatite, Ca5(PO4)3F.
Hydroxyapatite is the mineral of teeth. Toothpaste contains NaF or SnF2 to replace OH^- with F^- and strenthen the tooth enamel (more resistant to acid).
32. A weak organic acid. Define weak organic acid. Common name, chemical name, chemical formula required. Vinegar: 5% acetic acid
33. Something containing titanium (IV) oxide. Common white pigment in high quality paper and white paint
34. An alkaline earth hydroxide. Chemical formula, common name and chemical name required.
Mg(OH)2 milk of magnesia
35. A compound composed of an alkali metal and a halogen. Common name, chemical name, and chemical formula required. Salt! NaCl
36. A mixture which could be separated using paper chromatography. Define paper chromatography. Common name required. I've seen it done on black ink.
37. Something containing a transition element from period 4. Identify the transition element on the back of the note card. Ti (can't think of a common object with Zr, or Hf) a 747, but as above a sheet of good quality white paper, Some sunscreens have TiO2; high end sunglasses can have Ti frames
38. A nonmetal. Define nonmetal. Common name and chemical formula required. Carbon: graphite in your pencil lead; or steal yer Mum's diamond ring!
39. An electrolyte. Define electrolyte. Common name, chemical name, chemical formula required.
Salt soln
40. Something containing L-carvone or D-carvone. Identify which one you have. What characteristic does it impart to the substance which distinguishes it from the item you did not bring in.
One of these smells like musk and the other a smell completely different. Musk perfume (money is no object)
41. The solid product of the reaction between aqueous solutions of calcium chloride and sodium carbonate. Balanced equation, chemical formula and common name required. You teacher wants calcium carbonate, chalk, but blackboard chalk is usually CaSO4 (but he/she won't know the difference).
But could get a shovel-full from the White Cliffs of Dover. Marble is also CaCO3
42. An aqueous solution of a nonelectrolyte. Identify the solute and solvent by common name sugar solution. Cup of tea!
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chemistry scavenger hunt?
I need help on these questions plz help me :c
31. A substance that will change hydroxyapatite, Ca5(PO4)3OH, to fluorapatite, Ca5(PO4)3F.
32. A weak organic acid. Define weak organic acid. Common name, chemical name, chemical formula required.
33. Something containing titanium (IV) oxide....
This is a neat assignment. Look critically at each of the clues to identify what they mean, then think of an example. For example #18: A density less than 1.0 g/mL means that it is lighter than water. There are numerous possibilities. Cork floats on water. Diethyl ether is lighter than water. #17: Having a pH greater than 7 means that the substance is basic. So possible answers are lye and many other cleaning chemicals; bases you have worked with in lab such as sodium hydroxide (NaOH).
Define Hydroxyapatite