Yr 9 Chem 1.1 &1.2
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 | the fundamental building block of all materials; it consists of a cluster of protons and neutrons surrounded by a cloud of electrons
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| Atomic model | scientists’ representation of an atom determined by experiment and indirect observation
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| Atomic number | the number of protons in a nucleus; the atomic number determines what type of atom it is
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| Atomic symbol | a short-hand notation for describing an atom; it consists of the chemical symbol, atomic number and mass number
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| Compound | a pure substance that is made up of two or more different types of atom chemically joined
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| Crystal lattice | a grid-like structure of atoms or ions where each particle is bonded to all of its neighbouring atoms
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| Electron | a small, negatively charged particle; clouds of electrons surround the nucleus of an atom
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| Electron configuration | the number of electrons in each of the electron shells of an atom
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| Electron shell | part of the electron cloud; it is a layer that surrounds the nucleus and can only hold a certain number of electrons
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| Element | a substance made up of only one type of atom
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| Isotopes | atoms that have the same number of protons but a different number of neutrons in their nucleus
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| Mass number | the number of protons and neutrons in an atom
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| Molecule | a cluster of atoms that makes up an element or a compound
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| Neutral | having no overall charge
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| Neutron | a particle with no electric charge; it is found in the nucleus of an atom
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| Nucleus | a cluster of neutrons and protons at the centre of an atom
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| Periodic table | table showing all 118 known types of atoms (elements)
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| Proton | a positively charged particle in the nucleus
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| Anion | a negatively charged ion
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| Cation | a positively charged ion
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| Ion | an atom that has lost or gained electrons and therefore has an electric charge
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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.
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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