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5. If one element or two elements of a portfolio are missing will this have any impact on the assessment process?
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How did the arrangement of the periodic table help scientists know when they had found the missing element?
Apexvs. Patterns in the elements' properties
How can you predict the properties of missing elements?
yes, properties of an element depends on its atomic number and atomic mass unless it is an exception and the atomic number and atomic mass of unknown elements are known by placing it in periodic table
What was Mendeleev able to find out for each element?
He was able to work out the atomic mass of the missing elements, and so predict their properties. And when they were discovered, Mendeleev turned out to be right. For example, he predicted the properties of an undiscovered element that should fit below aluminium in his table. When this element, called gallium, was discovered in 1875, its properties were found to be close to Mendeleev's predictions. Two other predicted elements were later discovered, lending further credit to Mendeleev's table.
What did Mendeleev do that was so important?
He created a periodic table arranged by atomic mass. He wasn't the first, but he was the first to leave spaces in his table for unknown elements. At his time, there were only 63 known elements. Based on the elements around the blank space, scientists could predict the properties of the unknown element. The spaces were filled in when they were discovered.
When Mendeleev published his periodic table there were some spaces for undiscovered elements Figure 15-1 is a section of a similar table A reasonable value for the atomic mass of the missing element?
72.3 you must be in connections academy
How did the arrangement of the periodic table help scientists know when they had found the missing element?
Apexvs. Patterns in the elements' properties
How can you predict the properties of missing elements?
yes, properties of an element depends on its atomic number and atomic mass unless it is an exception and the atomic number and atomic mass of unknown elements are known by placing it in periodic table
What is the difference between synthetic elements and other elements?
Synthetic elements are those which have been produced by scientists in a laboratory, but not yet discovered occurring naturally. They are true elements because they occupy missing spaces on the periodic chart....they adjust the number of electrons, i.e., in one element to create another.
What is a good way to start a photography portfolio?
A good way to start a photography portfolio is by going through your pictures and deciding which ones really show off the kind of work you do. If you think something is missing, take a few more pictures before finishing the portfolio, and add them in!
What were the 3 missing elements in the periodic table?
my vasss
What are the elements of the crime of burglary?
Burglary is a combination of two elements. 1. Trespassing on to property. 2. The intent of committing an additional crime (usually a felony). If either element is missing, a burglary has not been committed.
Who invented piriodic table?
Dmitri Mendeleev created the first periodic table according to atomic mass in 1869. Others before Mendeleev had organized the elements according to their properties and were able to discern periodicity, although Mendeleev is generally accepted as the creator of the table.With the information he gathered about the elements, he was able to see that there were missing elements that hadn't been discovered. He could figure out the atomic masses of the missing elements by averaging the atomic masses of the elements above and below the missing one. One such element, which he called "eka-silicon" (eventually Ge) was missing, but with understanding of the patterns the periodic table made, he predicted the elements appearance, melting point, atomic mass, density, formula of oxide, and formula of chloride.Throughout the years, other scientists were able to find or create these missing elements to form the table we know today. Today's periodic table is ordered by atomic number instead of atomic mass (as Mendeleev had started). Henry Moseley was the first to order the elements by atomic number so elements would fit together in groups/families and periods better in 1913.
What is the missing element from all inchoate crimes?
balls and testes
What element is missing from this diagram of rock cycle?
metamorphic rock!
What was Mendeleev able to find out for each element?
He was able to work out the atomic mass of the missing elements, and so predict their properties. And when they were discovered, Mendeleev turned out to be right. For example, he predicted the properties of an undiscovered element that should fit below aluminium in his table. When this element, called gallium, was discovered in 1875, its properties were found to be close to Mendeleev's predictions. Two other predicted elements were later discovered, lending further credit to Mendeleev's table.
What is the objective of a Data Quality assessment?
Data Quality Assessment is a tool used by many businesses and corporations. The objective of Data Quality Assessment procedures is to give businesses and corporations accurate reports and data. Some of the things Data Quality Assessment does is to confirm data and find missing data.
What are two elements that elephants are missing at the zoo?
Jungle and their family
