Flashcards
Basic chemistry
Flashcards do conjunto (15)
- 1What do sub atomic particles haveA charge and mass
- 2How do you work out the mass of a sub atomic particle?Adding together protons and neutrons
- 3What happens to the charges when the atom has and equal number of protons and electrons.They cancel out
- 4What charge to neutrons haveNone, they are neutral
- 5How do you work out the mass number of an atomYou add up the protons and neutrons
- 6How many electrons does the first shell of an atom hold2
- 7How many electrons does the second shell of an atom hold8
- 8What is the charge of a neutronPositive +
- 9What is the charge of an electronNegative -
- 10Whats the relative mass of a proton1
- 11What's the relative mass of a neutron1
- 12What the relative mass of an electron0.0005
- 13How many electrons does the third shell of an atom hold18, but only fills up with 8 before the next shell is started
- 14What is always identical in the atom?The number of protons and electrons
- 15What do atoms with the same number of electrons on their outer shell have?Similar chemical properties
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- FlashCards sobre Basic chemistry , criado por rebeccahumphries em 22-03-2015.
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- rebeccahumphries
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