Flashcards
mocks chemistry
Flashcards do conjunto (25)
- 1Relative charge of a proton+1
- 2relative charge neutron0
- 3relative charge of an electron-1
- 4relative mass of proton1
- 5relative mass of neutron1
- 6relative mass of electron0.0005 (zero)
- 7what is an elementa substance that cannot be broken down into any simpler substance and contains only 1 type of atom
- 8What is a compounda substance that contains at least 2 types of atoms that are chemically combined
- 9what is the atomic numbernumber of protons in an atom
- 10isotopes?same elements with different numbers of neutrons
- 11isotopes have the same ? and different ?same atomic number
different mass number - 12what is mass numberprotons + neutrons
- 13an uncharged particle is eitheran atom on its own
or
a molecule with two or more atoms bonded together - 14ion?charged atom or group of atoms
- 15when is a positive ion formedwhen an atom loses one or more electrons
- 16a negative ion is formed when...an atom gains one or more electrons
- 17how does a metal and a non-metal combinetransferring electrons
- 18another name for group 1 metalsalkali metals
- 19what do they have in common1 electron in outer shell
- 20why are they stored under oilreact with oxygen and water vapour in air and can be dangerous
- 21what metals are associated with the flame testlithium, sodium and potassium
- 22colour of lithium flamered
- 23colour of sodium flameyellow
- 24colour of potassium flamelilac
- 25alkali metals react with water to produce ?hydrogen and a hydroxide
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- Descrição
- FlashCards sobre mocks chemistry, criado por 12bbradshaw em 16-12-2014.
- Criado por
- 12bbradshaw
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