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.
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“[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.”
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. It’s a great resource!
*Some of you have already purchased my lab book – be sure to check out Page 141 !
“The executive mayor of Cape Town [, South Africa] has warned citizens and prospective visitors that the city is ‘very likely’ to run out of water in April . After two years of drought which saw rain at about one-third of normal levels, reservoirs supplying the city are running dry. Calls to limit individual consumption to 87 litres per day have, say the authorities, been ignored by three-fifths of the people living in greater Cape Town - which has 3.7 million people.”
“The City of Cape Town [in South Africa] is experiencing its worst drought in over a century and if nothing is done the city is likely to run out of water before the rainy season of 2018. This plot of Cape Town's supply over the last five years aims to make that obvious to everyone. If historical usage trends continue, there is not enough water to get Cape Town through the summer [of 2018]. Despite this major crisis, many people in the city are not changing their behavior fast enough.”
This page provides water-saving tips for the populace:
“Here are four simple things that everyone in Cape Town can do today to respond to this crisis.
Save 10 L of water for every minute shaved off your shower. The city recommends taking 90-second showers.
Save 9 L of water every time you choose not to flush your toilet. If it's yellow, let it mellow!
Save 8 L of water every day by dropping a brick or full bottle into your toilet cistern to reduce its water consumption.
Put a bucket in your shower and sink, and use the run-off to flush.”
“Cape Town is South Africa's second-largest city and a top international tourist draw. Now, residents play a new and delicate game of water math each day.
They're recycling bath water to help flush toilets. They're being told to limit showers to 90 seconds. And hand sanitizer, once somewhat of an afterthought, is now a big seller.”
“A person uses about 15 litres per minute for a typical shower and the same amount when flushing a standard toilet, according to WaterWise, a South African water usage awareness campaign.”
“Current limit per resident: 87 litres; from 1 February: 50 litres
Day Zero (predicted day non-essential supplies to be cut off): 21 April (revised down from 29 April earlier this month). Takes effect when dams reach 13.5% capacity; currently at 28.1%
70% of Cape Town water use is in domestic homes - so:
- Fix water leaks on your property
- Use drinking water only for drinking, cooking and essential washing
- Only flush the toilet when necessary
- Cut showers to two minutes
- Collect your shower, bath and basin water and re-use to flush toilet, water garden and wash car
- Only run washing machines and dishwashers with a full load”
“Despite warnings since 2004, local government officials are criticizing South Africa's national government for its slow response to the crisis. As The Los Angeles Times notes:
Western Cape Premier Helen Zille and provincial authorities have accused the national African National Congress government of failing to build and maintain new infrastructure and send adequate emergency drought relief. It was not until August that the national government allocated the city $1.5 million to deal with the crisis.
Prior to tightening water measures, the city attempted to shame residents into using less water by posting an online map tracking water consumption across the city.
Cape Town has also tried to reduce water usage by weakening the water pressure and installing water management devices, according to Reuters. Desalination projects and new efforts to extract groundwater are still in the early stages…”
According to the U.S. Geological Survey (USGS), “[e]stimates vary, but each person uses about 80-100 gallons of water per day. Are you surprised that the largest use of household water is to flush the toilet, and after that, to take showers and baths? That is why, in these days of water conservation, we are starting to see toilets and showers that use less water than before.
Many local governments now have laws that specify that water faucets, toilets, and showers only allow a certain amount of water flow per minute. Water agencies in some areas, such as here in Atlanta, Georgia, offer rebates if you install a water-efficient toilet. In fact, I just put in two new toilets and received a rebate of $100 for each. Yes, they really do use a lot less water. For your kitchen and bathroom faucets, if you look real close at the head of a faucet, you might see something like ‘1.0 gpm’, which means that the faucet head will allow water to flow at a maximum of 1.0 gallons per minute.”
This situation may be a good source for a discussion or a test essay question about water and if a water crisis/shortage affects their area.
Other Water posts include:
03/12/2014 Polarity and Intermolecular Forces
09/03/2015 Method to Slow Evaporation
10/08/2015 Current Event - Contaminated Drinking Water
11/13/2015 Sewage in Lake Champlain
01/13/2016 Doce River Mine Accident (Brazil)
03/19/2016 Microplastic Polluting Our Oceans
09/23/2016 Water Pollution in US Schools
01/20/2017 Contaminated Drinking Water at
US Marine Camp
08/11/2017 Database About U.S. Public Water Systems
10/20/2017 Toxic Water in Puerto Rico
*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.
Remember, buying a copy of the lab book Chemistry on a Budget can be very useful to your Chemistry classroom with labs and class article ideas.
Have a great weekend!