This experiment is for advanced students. This lab builds on concepts from the previous carbon dioxide lab.
Limewater….carbon dioxide…indicators. We don’t know too much about these things. Sure, we know a little. Carbon dioxide is exhaled by us and plants need it to grow. Burning fossil fuels produces carbon dioxide.
Indicators…something we observe that confirms to us that something specific is happening. Lime water turns cloudy and forms a precipitate in the presence of carbon dioxide. Blue litmus paper turns red in the presence of an acid. The dog barking at the door and dancing around indicates that you better let the dog out, and quick, to avoid….a pet spill?
Please login or register to read the rest of this content.
My assistant is looking into your account now to be sure you’ve got everything set up right.
Kids tend to be all over the map when it comes to how much they’ve learned in science, because there’s no one real way to “test” their mastery due to the very nature of what science is. Some kids have had a ton of “science”, when really all they’ve done is memorized plant parts and organ functions, but they can’t tell you when you use a iodine stain or how to use a micrometer.
The approach I use is to start from the bottom and work our way to the top at your child’s pace. Some of the content is going to show up in multiple grade levels because we really want to be sure you’ve got your fundamentals covered before moving into the high school section.
The program is designed to do through by Topic, we only added the “grade Level” option recently, so some of the lessons are locked when you try to access them. Here’s what you do – simply ask us to unlock an entire grade level for you, and you’ll have access to ALL the content in that grade.
Thanks!
Just a quick question, I came across this above content saying I do not have access because it is 9-12th grade. It is true that I don’t have that subscription. My question is why is it a part of the 2nd grade lesson list if it is for 9-12th?