junior science ch 17
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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| what is a mixture | two or more substances mingled together but not chemically combined
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| What is a compound | two or more different elements combined together and chemically combined. they contain two or more different types of atoms
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| What is an atom | the smallest part of an element which still has the properties of that element
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| what is an element | a substance that cannot be split up into simpler substances by chemical means. a substance made of only one type of atom
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| What is the periodic table | a list of all the elements which exist
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| what is a molecule | two or more atoms chemically combined
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| What elements are found in water | Hydrogen and Oxygen
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| What is the symbol for tungsten | W
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| how many atoms in a molecule of carbon dioxide CO2 | 3
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| What is the symbol for salt | NaCl
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| Elements are made of | one type of atom
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| Marie Curie discovered two elements called | Polonium and radium
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| all elements are listed on the | periodic table
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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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Created by:
PHealy
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