Chemistry hw on matter. Please help im lost.I was sick for a class but i still need to turn it in?
I am so lost. Which are substances and which are mixtures? And if they are substances, is it an element or compound. And if it is a mixture, is it a homogeneous or heterogeneous. Calcium, kool aid, milk, iron, quartz, lemons, water, propane, and ATP?
- az_lenderLv 72 years agoFavorite Answer
Elements: calcium, iron.
Compounds: water, propane, ATP.
Homogeneous mixture: kool aid.
Heterogeneous mixture: lemons.
Milk is a mixture; it's homogeneous if it's been "homogenized." (Duh !!)
Tricky: Quartz -- it's MOSTLY the compound SiO2, but usually includes some other trace elements, so I guess you have to call it a mixture.
- DrBob1Lv 72 years ago
They are all "Substances"; you need to know if they are "Pure substances". There is just one kind of a pure substance. Like Calcium. There are many kinds of mixtures. Like Kool aid. Now try it.