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Summary: Chemistry
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Read the summary and the most important questions on Chemistry
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1 Chemistry
This is a preview. There are 14 more flashcards available for chapter 1
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What way can you tell how many electrons are in a element in ions
By lookIng at what group they are in for example magnesium is in group 2 so it has two electroms -
Do metals gain or lose an electron
They lose an electron Making the a positive ion -
How do you work out the number of neutrons in an element
Take the mass number(top) and subtract it by the atomic number(bottom) -
What charge does the group 1 produce
It produces a positive charge 1+ -
How does the alkalise element react
React very extreme when making contact with air that is why it has to be stored in oil also it reacts violently with water -
How many electrons are in the outer shell of a new noble gas
There are eight electrons apart from helium which has two -
What are the transition element
They are metals which are in the middle of the periodic table between groups two and three -
What properties do they hold in the transition element
They are metals and they are good conductors of heat and electricity they can be hammered or bent into shapes easily and they are also useful for making objects that need to the electricity or he travelled through them easily -
What is covelent bonding
When is 2 non-metals atoms share a pair of electrons -
What are the properties of a covalent bond
The covalent bonds binding the atoms together are very strong but there are only very weak forces holding the molecules to each other (the intermolecularforces). Therefore, only a low temperature is needed to separate the molecules when they're melted or boiled.
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