Flashcards
Atoms And Molecules
Cards in this deck (22)
- 1Law of Conservation of MassMatter is neither created nor destroyed in a chemical reaction. Mass of Reactants = Mass of products
- 2Law of Constant ProportionsA chemical compound always consists of the same elements cimbined together in the same proportion by mass.
- 3First 5 Points of Dalton's Atomic Theory1. All matter divided into atoms
2. Atoms can't be divided (setback)
3. Neither created nor destroyed
4. Different kinds of atom
5. Atoms of one element are identical (setback: can have different masses) - 4Next 3 Points of Dalton's Atomic Theory6. Atoms of different elements differ by everything (setback: can have same mass)
7. Creating a compound consists of chemically bonding the atoms of thr elements to form molecules
8. Number and Kind of atom in a molecule is constant - 5Last 2 Points of Dalton's Atomic Theory9. During chemical combination, elements combine in small whole numbers
10. Atoms of the same element can combine in more than one ratio to form one compound - 6AtomThe smallest part of matter that rakes place in chemical reactions.
- 7Size of an Atom1 nm = 10^-9 m
Hydrogen is the smallest atom - 8Scanning Tunnelling MicroscopeProduces computer-generated images of atoms
- 9SodiumNa
(Natrium) - 10PotassiumK
(Kalium) - 11IronFe
(Ferrum) - 12CopperCu
(Cuprum) - 13GoldAu
(Aurum) - 14MercuryHg
(Hydragyrum) - 15LeadPb
(Plumbum) - 16TinSn
(Stannum) - 17IUPACInternational Union of Pure and Applied Chemistry
- 18Atomic Mass of an Element1 u = 1/12(mass of Copper-12 atom)
- 19Atomic Mass of Common Elements
- 20MoleculesElectrically neutral group of atoms chemically bonded together. It can exist in the free state as it is stable.
- 21AtomicityNumber of atoms in a molecule. Denoted by a small digit on the lower right side of symbol.
- 22Moleculed of CompoundsHas two or more different atoms.
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- Flashcards on Atoms And Molecules , created by Vanshika Sharan on 27/11/2015.
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- Vanshika Sharan
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