PT and counting atoms
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 smallest particle into which an element can be divided and still have the properties of that element.
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| proton | A positively – charged particle that is located in the nucleus of an atom.
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| neutron | A particle with no charge that is located in the nucleus of the atom.
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| electron | A negatively – charged particle that is located outside of the nucleus of the atom.
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| nucleus | The center of an atom, containing the protons and neutrons.
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| electron cloud | The region inside an atom where electrons may be found.
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| valence electrons | The electrons in the outermost energy level of an atom.
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| atomic number | The number of protons in the nucleus of an atom.
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| atomic mass | The average mass of one atom of an element.
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| compound | A substance made of two or more elements that are chemically combined.
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| Periodic Table of Elements | A chart where all of the elements are arranged according to their atomic number and properties.
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| group/families | A vertical column of elements on the periodic table. Shows number of valence electrons.
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| period | A horizontal row of elements on the periodic table. Shows number of shells/energy levels.
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| physical property | A property of a substance that can be observed without changing the identity of the matter.
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| chemical property | A property of a substance that is based on its ability to react with another substance.
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| metal | An element that is shiny, ductile, malleable, and a good conductor.
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| nonmetal | An element that is not shiny, ductile or malleable and is not a good conductor.
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| metalloid | An element that has properties of both metals and nonmetals.
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| chemical reaction | A change that takes place when two or more substances interact to form new substances.
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| chemical formula | A description that uses numbers and element symbols to represent the atoms that make up a compound.
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| reactant | A starting material in a chemical reaction.
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| product | A substance formed from a chemical reaction.
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| matter | Anything that has mass and takes up space.
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| molecule | Two or more bonded atoms.
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| subscript | The total number of atoms of an element in a chemical formula.
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| coefficient | The total number of molecules of a chemical formula.
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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.
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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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Created by:
vdelag2
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