You just have a few weeks before school starts. Buying a copy of the lab book Chemistry on a Budget is a great resource for your classroom!
There are two versions of each lab, one with a ten-question conclusion and one with directions for a full lab report. This way the teacher has the option! Each lab is two pages to allow for one two-sided handout.
A 5-Star Customer Review of Chemistry on a Budget at amazon.com states:
“[S]traight forward, to the point, using household chemicals…this is the lab book for you.
I teach high school chemistry and this is exactly what [I] was looking for. Labs included simple household chemicals that could be easily found. Nice format, easy to follow along procedures, and touches on every topic of our chemistry curriculum.”
During the summer vacation, buying a copy of the lab book Chemistry on a Budget can be very useful. You can examine the labs and decide what you want to use next year.
You can buy this lab book for $23 at amazon.com or lulu.com. It will take 1-2 weeks to get to you -- Order Now so you have it handy for the school year!
*Some of you have already purchased my lab book – be sure to check out Page 141 !
“Imagine a world with little or no concrete. Would that even be possible? After all, concrete is everywhere—on our roads, our driveways, in our homes, bridges and buildings. For the past 200 years, it's been the very foundation of much of our planet.
But the production of cement, which when mixed with water forms the binding agent in concrete, is also one of the biggest contributors to greenhouse gas emissions. In fact, about 5 percent of the planet's greenhouse gas emissions comes from concrete.
An even larger source of carbon dioxide emissions is flue gas emitted from smokestacks at power plants around the world. Carbon emissions from those plants are the largest source of harmful global greenhouse gas in the world.”
“Inorganic forms of solid carbon such as rock are also part of the carbon cycle. Rocks and other minerals are by far the largest sinks of carbon on Earth and they can weather or decompose, either naturally or through anthropogenic processes such as in cement kilns. The carbon dioxide released to the atmosphere is naturally in constant flux with other large sinks, such as the oceans and other surface waters, where it dissolves and through a variety of both organic and inorganic calcareous processes, such as reef formation and precipitation, settles back into the Earth’s crust.
However, concrete can also absorb carbon dioxide and store it in a process commonly referred to as carbonation. This may be viewed simply as an additional, alternative loop of the complex carbon cycle.”
“…how much [carbon] dioxide is absorbed in concrete and how long does it take? The answer is that we do not know. We have known for decades that concrete absorbs carbon dioxide, and in fact, there have been numerous studies on it. However, these studies mainly focused on only a portion of the carbon sequestration question, which is how carbon absorption might affect reinforcing bars within a concrete structure. When carbon dioxide is absorbed into concrete many chemical reactions take place. These usually result in a lowering of the pH in the portion of the concrete where significant amounts of carbon dioxide have been absorbed. … Some reinforcing materials in contact with concrete that has a lower pH are not as well protected from corrosion as these materials in contact with concrete that has a higher pH. Carbon dioxide slowly absorbs into a concrete structure from the source of the carbon dioxide (usually the air around it), and the depth at which this absorption has resulted in a significant pH change is usually referred to as the carbonation front. Usually applications with reinforcing material which might be affected by a change in pH are designed so that the carbonation front does not reach these materials over its intended life.”
“Production of concrete contributes to 90 per cent of global CO2 emissions from industrial processes, or 5 per cent from industrial processes and fossil fuels combined
Estimated that 38.2 gigatonnes of CO2 released by cement production between 1930 – 2013
Over same time, modelling indicates 4.5 gigatonnes were reabsorbed”
“Cement is responsible for 7% of global man-made greenhouse emissions, making it the world's second largest industrial source of carbon dioxide, according to the International Energy Agency. Data from the United States Geological Survey -- the scientific agency of the US government -- reveals that global cement production was responsible for about 4 billion pounds of CO2 emissions in 2017 alone.
…[A] Canadian startup has invented a new system for making concrete that traps CO2 emissions forever and at the same time reduces the need for cement.
CarbonCure's system takes captured CO2 and injects it into concrete as it's being mixed. Once the concrete hardens, that carbon is sequestered forever. Even if the building is torn down, the carbon stays put. That's because it reacts with the concrete and becomes a mineral. “
“CarbonCure isn't the only company working to make concrete more environmentally friendly, but it's one of the first to market. Carbicrete and Carbon Upcycling are two other startups working on more sustainable solutions for concrete.”
Students looking for Extra Credit possibilities may be assigned research on the History and Economic Success of CO2 absorbing concrete.
Buying a copy of the lab book Chemistry on a Budget can be very useful during your school year. ORDER NOW so you have it ready for the upcoming school year.
*This Blog contains several entries that would be helpful to your chemistry classroom. Check out the Topic List to help you to find past Blog entries.
Also, Write To Me about your successes, challenges, or questions in the Chemistry Classroom.
Have a great weekend!