Flashcards
Atoms and Elements
Flashcards do conjunto (11)
- 1What are Atoms?Atoms are the smallest particles of matter, that we cannot break down by chemical means
- 2What makes an element an element?Elements are made up of only one kind of atom
- 3The properties of a solid...particles are densely packed and have strong forces (vibrate)
- 4Absolute zero is......the temperature at which particles do not move (- 273°)
- 5What is diffusionwhen a substance moves from an area of high concentration into an area of low concentration
- 6What is distillation?the process of heating a mixture (with a liquid) to separate two elements by evaporating the other
- 7What are sub-atomic particles?protons, neutrons, electrons (particles found in an atom)
- 8what are isotopes?atoms of the same element but with different numbers of neutrons
- 9what defines a "noble element"an element with a full shell of electrons
(1st shell = 2 electrons
2nd shell = 8 electrons) - 10When is an ionic bond most likely to occur?When the elements are further away from one another on the periodic table of elements
- 11What is osmosis?the spontaneous net movement of solvent molecules through a semi-permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides
Informações
- Descrição
- Some questions on atoms and elements
- Criado por
- Imani :D · jun 2015
- Atualizado
- 12 nov 2016
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