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Episode 2
KEy question: What do the rows and columns mean on the periodic table?
KEy question: What do the rows and columns mean on the periodic table?
Task 1 - DO now
Task 1 - DO now
Jog your memory by answer the quick start recall questions
Task 2 - Meet the periodic table
Task 2 - Meet the periodic table
In the modern periodic table:
The table is called the periodic table because elements with similar properties occur at regular intervals.
elements are arranged in rows, called periods, in order of increasing atomic number
elements with similar properties are placed in vertical columns, called groups
The left hand side ot the table shows metals
The right hand side shows the non-metals
Now complete task 2 on the companion sheet.
Answer the first 2 questionsat the top of the page, then drag 'n' drop the boxes to correctly label the periodic table of elements
So what does the periodic table tell us?
So what does the periodic table tell us?
Use the information below to complete the diagram on your companion sheet
What a guy!
What a guy!
Read the information on the right and then complete the task on the companion sheets asking you to identify how he made his table and how did he overcome issues in his table
Task 3 - Dmitri Mendeleev
Task 3 - Dmitri Mendeleev
Dmitri Mendeleev, In 1869, Dmitri Mendeleev arranged the elements into a version of the periodic table we still use today.
Like many scientists working at the end of the 19th-century the Russian chemist Dmitri Mendeleev (1834-1907) was looking for ways to organise the known elements. Mendeleev published his first periodic table of the elements in 1869.
Features of Mendeleev's tables
Mendeleev arranged the elements in order of increasing relative atomic mass. When he did this he noted that the chemical properties of the elements and their compounds showed a periodic trend. He then arranged the elements by putting those with similar properties below each other into groups. To make his classification work Mendeleev made a few changes to his order:
he left gaps for yet to be discovered elements
he switched the order of a few elements to keep the groups consistent
Predictions using gaps
Mendeleev left gaps in his table to place elements not known at the time. By looking at the chemical properties and physical properties of the elements next to a gap, he could also predict the properties of these undiscovered elements. For example, Mendeleev predicted the existence of 'eka-silicon', which would fit into a gap next to silicon. The element germanium was discovered later. Its properties were found to be similar to the predicted ones and confirmed Mendeleev's periodic table
Task 4 - Magenta Condense
Task 4 - Magenta Condense
Read through this extract of information about the periodic table.
"All the different elements are arranged in a chart called the periodic table. A Russian scientist called Dmitri Mendeleev produced one of the first practical periodic tables in the 19th century. The modern periodic table is based closely on the ideas he used:the elements are arranged in order of increasing atomic number, the horizontal rows are called periods and the vertical columns are called groups and the elements in the same group are similar to each other. The main groups are numbered from 1 to 7 going from left to right, and the last group on the right is group 0. The section in the middle of the table is called the Transition Metals. You may also see all the groups numbered (including the transition metals), this time from 1 to 18. If you know what one of the elements in a group is like, you can make predictions about the other elements in a group. For example, all the elements in group 1 are reactive metals, and all the elements in group 0 are unreactive non-metals. The zig-zag line in this diagram separates the metals, on the left, from non-metals, on the right. Hydrogen is a non-metal but it is often put in the middle. Notice that most elements are metals, rather than non-metals. Each element has its own chemical symbol, made from letters. Remember that you will only find elements in the periodic table and never compounds. So you won’t find substances like water or copper sulfate in the periodic table. "
Tasks
On the copmpanion sheet, highlight topic specific words that you will add in to a glossary (one has been done for you as an example). You do not need to highlight the same keyword if it is repeated
Choose 4 of those keywords and complete the glossary task. For each word you will need to find a picture that represents it, a definition and use it in a sentence. Use the example below to help you. See the example below
3. Summarise the text into 8 short sentences in your own words, think about what is the most important information that you need to keep out of the extract.
Task 4 - QUIZ
Task 4 - QUIZ
Complete the quiz and put your score on the comapnion sheet
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