Ch. 1
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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anything that has mass and takes up space. | matter
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a small particle that is the building block of matter. | atom
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matter with a composition that is always the same | substance
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a substance that consists of only one type of atom. | element
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two or more atoms that are held together by covalent bonds and act as a unit. | molecule
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a substance containing atoms of two or more different elements chemically bonded together. | compound
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matter that can very in composition. | mixture
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a mixture in which substances are not evenly mixed. | heterogeneous mixture
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a mixture in which two or more substance are evenly mixed but not bonded together. | homogeneous mixture
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the region in the center of an atom where most of an atoms mass and positive charge is concentrated. | nucleus
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a positively charged particle in the nucleus of an atom. | proton
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a neutral particle in the nucleus of an atom. | neutron
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a negatively charged particle that occupies the space in atom outside the nucleus. | electron
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the region surrounding an atoms nucleus where one or more electrons are most likely to be found. | electron cloud
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the number of protons in an atom of an element. | atomic number
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an atom of the same element that have different numbers of neutrons. | isotope
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an atom that is no longer neutral because it has lost or gained valence electrons. | ion
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what are solutions? examples... | a a mixture in which two or more substances are evenly mixed, but not bonded together. brass,gases,ammonia cleaner,water.
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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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