valerie placed 1.0g of salt into one beaker, 1.0g of soil into a second beaker, and 2.0g of sugar in a third beaker. She then added 200mL of water to each beaker and stirred the contents for 3 mintues. How many compounds and how many mixtures did Valerie make? Identify each. Explain whether a chemical or physical change took place in each beaker.
5 answers
Tell me what your problem is in understanding this. Do you know the definitions of mixture, compounds, and chemical/physical changes?
i'm suppposed to be in 7th grade but they skipped me up to 8th
Good for you but that doesn't answer by questions. What do you not understand? Do you know the definitions? Perhaps I could help with the definitions?
i don't know the definitons because they are confusing.
http://www.chem.purdue.edu/gchelp/atoms/elements.html