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34 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Atom |
Little building blocks that contain electrons, neutrons and protons |
Blocks |
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Elements |
Multiple of the same atom form to make elements |
Compound |
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Compounds |
Combination of 2 or more elements that are chemically bound together |
Bound |
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Molecules |
A combination of multiple atoms (element or compound) |
General term |
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Mixtures |
2 or more things that are combined but are not chemically bound together |
2+ |
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What did Mendelev do in 1864? |
Produced a table based on atomic weights but arranged by elements with similar properties under each other. |
Based on atomic weights |
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What did Mendelev do in 1869? |
Changed the table to what we see today |
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What did William Ramsay do in 1894? |
Discovered the noble gases |
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What did Marie and Pierre Curie dp in 1898? |
Isolated radium and polonium from pitchblende? |
Isolation |
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What did Henry Moseley do in 1913? |
Determined the atomic number of each of the elements and modified the 'Periodic Law' |
Modification |
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What did Glenn Seaborg do in 1940? |
Synthesised transuranic elements (the elements after Uranium in the Periodic Table) |
Elements after Uranium |
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Condensation |
A gas turning into a liquid by decreasing the temperature |
Decrease |
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Melting Point |
The temperature at which a solid turns to a liquid |
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Boiling point |
The temperature at which a liquid changes to a gas |
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Isotope |
An element with a different number of neutrons. |
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Distillation |
The process of separating a mixture at one of the liquids boiling points when that liquid has evaporated, then you cool and condense so they separate. |
Separation |
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Property of all metals |
High boiling and melting point |
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Property of chlorine |
Kills bacteria, sterilysing |
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Property of helium |
Low density |
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Name the noble gases |
Helium, Neon, Argon, Krypton, Xenon, Radon |
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How many electrons do alkali metals have on their outer shell? |
One |
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What changes are made as we go down the group when talking about shells?
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They increase by one shell |
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What do alkali metals want to do?
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Lose one electron so they have a full outer shell
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Why do the alkali metals find it easier to lose the one electron as we go along the group? |
They decrease in attraction between the nucleus and the outer shell |
Attraction |
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What do Halogens want to do? |
Gain one electron so they have a full outer shell |
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How does halogen displacement work? |
The less reactive halogen displaces the more reactive halogen causing a colour change and changing which halogen is present. |
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Name 2 differences between alkali metals and halogens |
Alkali metals are metals but halogens are non-metals.
Alkali metals have a high melting/boiling point but halogens have a low melting/boiling point. |
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Name 3 similarities of alkali metals and halogens |
They both want to be stable and have a full outer shell.
They both increase by one shell as you go down the group. Both are one electron away from having a complete outer shell. |
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Name 3 properties of Noble Gases |
Noble gases are tasteless, colorless and odorless. They aren't flammable in standard conditions. They are ordered according to their boiling point in the Periodic Table. |
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Fractional Distillation
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Separation of a liquid mixture into fractions differing in boiling point by means of distillation, typically using a fractionating column. |
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Paper Chromatography |
Paper chromatography is an analytical method used to separate colored chemicals or substances. |
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What process pushes food down the gullet? |
Peristalsis |
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What is a long chain of amino acids? |
Proteins |
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What acid does the stomach produce? |
Hydrochloric acid |
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