Karteikarten
chemistry general
Karten in diesem Stapel (16)
- 1what are the symbols for: calcium carbon sodiumCalcium = Ca
Carbon = C
Sodium = Na - 2how would you work out the atomic number of an atom given its atomic number?put them into the rings 2,8,8 etc and count how many in each shell
- 3describe the process of ionic bonding.ionic bonding if when an atom loses or gain electrons in order to have a full outer shell
- 4what is covalent bonding?covalent bonding is when 2 atoms need to complete their outer shell so share electrons with another atom.
- 5name 3 building materials made from limestoneconcrete, cement, mortar
- 6whats the definition of an orea quantity of an element stuck in rock in a substantial volume that can be extracted
- 7what is electrolysisthe process using an anode and cathode, electrolyte and a current used to seperate
- 8give three properties of metalshard
bendable
good conductor of electricity/ heat - 9give 2 examples of alloys and say whats in thembronze = copper + tin
gold for jewelery = gold + zinc + copper + silver + palladium + nickel - 10what does crude oil containmostly alkanes. made up of chains of carbon atoms surrounded by hydrogen atoms.
- 11whats the general formula for an alkaneCnH2n+2
- 12is a short chain hyrdocarbon more viscous than a long chain?no the shorter the less viscous (gloopy) it is
- 13what do mass and atomic number representatomic mass and electron number
- 14what is a compounda group of atoms
- 15describe the process of ionic bondingwhen an atom loses/gains electrons in order to get a full outer shell
- 16what is covalent bondingwhen atoms share electrons in order to get a full outer shell
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- questions and summary's from AQA revision book
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- nclegg1998
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