Key words
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Atom | Small particle from which al substances are made
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| Compound | Two or more different atoms joined together by chemical bonds
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| Element | A type of atom
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| Matter | Something that takes up space
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| Oxidiser | A substance that supplies oxygen for a reaction
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| Chemical reaction | A change in which new substances are formed
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| Physical reaction | A change in which no new substances are formed
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| Chemical formula | The element symbols and their numerical ratios of a substance
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| Alkali metal | Group 1 reactive metals
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| Group | Vertical column of the Periodic Table
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| Periodic Table | List of known elements in order of atomic number
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| Atomic number | Number of positive protons in the nucleus
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| Mass number | Number of protons and neutrons in the nucleus
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| Proton | Positive particle in the nucleus
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| Neutron | Neutral particle in the nucleus
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| Electron | Negative particle in the nucleus (no relative mass)
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| Period | Row in the Periodic Table
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| Halogen | Group 7 of the Periodic Table
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| Noble gas | Group 0 unreactive non-metal gases with full electron shells
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| Boiling | Turning from a liquid to a gas throughout the liquid
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| Evaporation | Turning from a liquid to a gas at the surface of the liquid
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| Brittle | Not flexible, breaks under force
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| Melting | Turning from a solid to a liquid
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| Freezing | Turning from a liquid to a solid
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| Flexible | Can bend without breaking
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| Malleable | Can be beaten into shapes
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| Metal | Element that is shiny, conducts heat and electricity, malleable, flexible and high mp
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| Non-metal | Element that is not shiny, does not conduct heat and electricity
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| Transition metal | The central group of elements in the Periodic Table
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| Acid | A substance that releases hydrogen ions in solution (H+)
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| Alkali | A substance that releases hydroxide ions in solution (OH-)
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| Oxide | A compound of a metal or non-metal and oxygen
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| pH | The concentration of hydrogen ions in solution on a scale in multiples of 10 from 1 to 14
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| Indicator | A substance that changes colour under different pH
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| Reactivity | How quickly or vigorously something reacts
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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andrewweng0406
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