Flashcards
Science: Chemistry test 1
Cards in this deck (32)
- 1Solidlow energy, little space between particles, tightly packed, vibrating slightly, high force of attraction, fixed volume, fixed shape, can't be compressed
- 2Liquidmedium energy, some space between particles, not as packed as a solid, vibrating, medium force of attraction, fixed volume, free-flowing shape, can't be compressed
- 3Gashigh energy, lots of space between particles, vibrating lots, low force of attraction, takes up given space, can be compressed
- 4EvaporationLiquid to gas
- 5solidificationliquid to solid
- 6sublimationsolid to gas
- 7depositiongas to solid
- 8meltingsolid to liquid
- 9condensationgas to liquid
- 10DensityThe mass of an object in comparison to its size
How compact a substances particles are
Density = Mass/Volume - 11Diffusionparticles moving from an area of high concentration to an area of low concentration
- 12ConvectionA form of heat transfer, when a hotter substance rises (less dense) and cooler substances sink (more dense), resulting in heat transfer
- 13Atom structureElectron cloud: the area where the electrons travel
Nucleus: made up of protons and neutons - 14ChargesProtons: positive charge, located in the nucleus
Neutrons: neutral charge, located in the nucleus
electrons: negative charge, located in the electron cloud - 15Homogeneouswhen the components in the mixture are evenly distributed throughout the mixture
eg. air, water - 16heterogeneouswhen components of a mixture can be seen where the components have localised regions with different properties
- 17elementsmade up of only one type of atom
- 18compoundmade up of two or more atoms chemically combined in a definite proportion
- 19mixturemade up of elements and compounds mixed together in any proportion
- 20atomic numbernumber of protons in an atom
- 21mass numbernumber of protons and neutrons
- 22atom structureprotons = electrons
only in an element - 23Periodic table: groupscolumns in the periodic table are called 'GROUPS'
Groups are located at the first two columns to the left and the last 6 columns (not in the middle). ordered 1-8 from left to right - 24Periodic table: PeriodsA row (left to right) are periods. Elements in the same row have the same number of electron shells
- 25Alkali metalsGroup 1
- 26Alkali earth metalsgroup 2
- 27PeriodsNumbered 1-7 (up to down)
- 28Group 7called halogens
- 29group 8called 'noble gases'
- 30Periodic table: metalslocated to the left
- 31Periodic table: Metalloidslocated on both sides of the line, including Boron, aluminum, astatine and polonium
- 32Periodic table: non-metalslocated to the right
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- Flashcards on Science: Chemistry test 1, created by alvu on 26/05/2015.
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- alvu
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