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Now You See It, Now You Don't

5 Items Exclusive This product is exclusive to Carolina Biological Supply. Online Only This product is not available in our print catalog.
Now You See It, Now You Don't is rated 4.6 out of 5 by 9.
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$6.05 - $20.15 View Details

In this Science Buddies science project, you will investigate how acidic water can dissolve limestone rocks. You can customize this kit to include the limestone rocks, electronic scale, jars, and other supplies needed to complete this experiment.

 
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There are some types of rocks that can actually be dissolved by common liquids. It might be hard to imagine large, hard rocks being eaten away by some ordinary fluids, right? But it actually happens all the time! In this project, you will investigate how one type of rock—specifically limestone—can be dissolved by acidic water.

View the full project, background information, procedures, and more at ScienceBuddies.com

 
 
 
 
Rated 5 out of 5 by from Perfect Perfect little scale. Accurate and compact. The blue led lit screen makes it super easy to read
Date published: 2019-10-01
Rated 5 out of 5 by from Great and Easy to Use I use these with my 5th graders a lot. Great for a classroom, I love that they are cheap enough that I can have one per pair with a few backups. They are pretty durable and I find that yes, I do need to replace them every once and a while. When we make slime one always gets kinda destroyed. But it is so great to have the students in control. If you respect and take care of them they are pretty tough. Even a bit of water or sand or whatever inside is usslly clean able. They are VERY accurate.
Date published: 2019-09-19
Rated 4 out of 5 by from Great product I've been using these strips with my classes for several years. They are durable and are easy to use, no learning curve. Only downside, they are a little on the expensive side.
Date published: 2015-12-05
Rated 5 out of 5 by from great pH strips easy to use, I like the complete range, worked well for one method to measure pH in my pH lab
Date published: 2015-11-03
Rated 5 out of 5 by from 16 Limestone Rocks This product includes 16 limestone rocks, as described. We tested the rocks using vinegar and, as expected, the vinegar was able to (partially) dissolve the rocks. Each rock is around 20 grams to 50 grams in mass.
Date published: 2014-01-20
Rated 4 out of 5 by from Pretty good for the price colors aren't exact, but super easy to use.
Date published: 2011-05-09
Rated 5 out of 5 by from Not Messy I am not a teacher and use these strips to test the PH of my urine. What's great is that they're not messy and the range on the strips are so wide.
Date published: 2010-05-10
  • y_2020, m_1, d_26, h_18
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.4
  • cp_1, bvpage1
  • co_hasreviews, tv_2, tr_7
  • loc_en_US, sid_P_SB_FAM_NOWSEE, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_carolina
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 7ms
  • REVIEWS, PRODUCT