Adams ch 17 vocab
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| plasma | a fourth phase of matter in addition to solid liquid, and gass. in the plasma phase, which exists mainly at high temperature, matter consists of positively charged ions and free electrons
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| periodic table | a chart that lists elements by atomic number and by electron arrangements so that elements with the similar chemical properties are in the same column
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| shell model of the atom | a model in which the electrons of an atom are pictured as grouped in concentric shells around the nucleus
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| atomic number | number of protons in the nucleus of an atom.
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| isotopes | a form of an element having a particular number of neutrons in the nuclei of its atoms. different isotopes of a particular element have the same atomic number but different atomic mass numbers.
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| protons | a positively charged particle that is one of the two kinds of particles found in the nucleus of an atom
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| neutrons | an electrically neutral particle that is one of the two kinds of particles that compose an atomic nucleus
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| nucleons | the principal building block of the nucleus; a neutron or a proton.
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| chemical formula | a description that used numbers and symbols of elements to describe the proportions of elements in a compound or reaction
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| compound | a cehemical substance made of atoms of two or more different elements combined in a fixed proportion
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| molecule | the smallest particle of substance consisting of two or more atoms of the same or different elements bonded together.
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| brownian motion | the perpetual random movement of microscopic particles suspended in a fluid medium.
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| element | a substance made of only one kind of atom. examples of elements are carbon, hydrogen, oxygen, and nitrogen.
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| atoms | the smallest particle of an element that can e identified with that element. consists of protons and neutrons in a nucleus
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| nucleus | the positively charged center of an atom, which contains protons and neutorns and has almost all the mass of the entire atom but only a tiny fraction of the volume
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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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