Worked solutions to student book questions Chapter 4 Analysing acids and bases Q1. Antacid tablets should normally be chewed before they are swallowed. Why? A1. Antacid tablets are normally chewed to provide a larger surface area for faster reaction with stomach acids. Q2. A laboratory test to determine how much hydrochloric acid is neutralised by a brand of antacid does not give a complete picture of its effectiveness in the stomach. What other factors might be important? A2. Other factors to
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unknown Egyptian artist in 2350 BC. The artist uses all aspects of composition to convey Egyptian dominance. Using a Standard Egyptian Scale‚ the figures were carved in proportions seen to be ideal by the Egyptians. The sculpture was carved out of limestone. It was richly painted with brightly colored paint. Now‚ only traces of the paint are visible. This piece is currently on view at The Walter’s Art Museum. Nen-kheft-ka is depicted is his most idealized form—muscular‚ athletic‚ youthful‚ and large
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the 1700s. Differences: The Parthenon was built in Athens‚ Greece six centuries before the Pantheon was built in Rome making it the older of the two. The Pantheon has granite as one of the materials used in its building and the Parthenon used limestone. The Parthenon is more rectangular in shape whiles the Pantheon is round with a square front. The Pantheon was built following the Corinthian order while the Parthenon followed the Doric and Ionic order. Conclusion. With architectural works of
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The aggregate is generally a coarse gravel or crushed rocks such as limestone‚ or granite‚ along with a fine aggregate such as sand. The cement‚ commonly Portland cement‚ and other cementitious materials such as fly ash and slag cement‚ serve as a binder for the aggregate. Various chemical admixtures are also added to achieve varied properties Resource efficiency. The predominant raw material for the cement in concrete is limestone‚ the most abundant mineral on earth. Concrete can also be made with
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The pharaohs in Egypt were gods that walked among the living. When these gods passed on they were buried under millions of pounds of limestone‚ so as to prevent anyone from disturbing their eternal slumber. The reason there was so much more security around the pyramids was because pharaohs were seen‚ heard‚ and possibly touched by the citizens. In Mesopotamia‚ the gods used the ziggurats
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attractions: Flinders Rangers: Date accessed: Thursday‚ 14th March‚ 2013 – Title: Flinders Rangers and Outback – Source: http://sg.southaustralia.com/regions/flinders-ranges-outback.aspx Limestone Coast: Date accessed: Thursday‚ 14th March‚ 2013 – Title: Limestone Coast – Source: http://sg.southaustralia.com/regions/limestone-coast.asp Eyre Peninsula: Date accessed: Thursday‚ 14th March‚ 2013 – Title: Eyre Peninsula – Source: http://sg.southaustralia.com/regions/eyre-peninsula.aspx Murray River: Date accessed:
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piece‚ the artist‚ and the elements of the artwork. This artwork is comprised of three major elements in the central lobby area of the building Palmer: One a water/word wall located on both the first and second levels. Water gently flows down the limestone "slot" which is sandblasted with words-"first words" or words spoken by children as they
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The Grand Canyon was once a part of a continental collision about 1.7 billion years ago when volcanic islands collided in the south west of America‚ where the North American plate is now. Mountain building occurred about 75 million years ago when the uplift of almost 2 miles in the region‚ (called a Laramide orogeny event) started and created the Colorado Plateau. The rocks in the Grand Canyon were igneous or sedimentary rocks before the collision of tectonic plates. The collision pushed the plates
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where the statue of ka (believed to be the soul of a person) was placed. An underground burial chamber completed the construction of the mastaba. These mastabas were originally built with mud brick‚ but as the culture progressed they were built with limestone. Eventually‚ the mastaba evolved into a much larger structure. This structure was a stacking of mastaba forms with a large mastaba at the base and decreasing in size as it extended vertically‚ like steps. The stepped
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were made with technology that the Egyptians created but may have lost through the ages. Dr. Donald Redford‚ a professor of Mediterranean ancient studies‚ believes that these Pyramids were constructed by copper chiseling tools to cut limestone. Finer quality limestone composed the outer layer of the pyramids‚ giving them a white sheen that could be seen from miles away. The capstone was usually made of granite‚ basalt‚ or another very hard stone and could be plated with gold‚ silver or electrum‚ an
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