Unit4 Vocabulary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| atomic mass | average mass of one atom of an element
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| preiodic table | a chart where all elements are organized into periods and groups by properties
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| chemical symbol | a one or two letter code that stands for an element
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| period | a row of elements in the periodic table arranged by atomic number
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| group | column of elements in the periodic table
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| matter | anything that has mass and takes up space
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| element | substances that are the building blocks of matter
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| compound | matter made up of two or more elements
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| atom | smallest particle into which an element can be divided and still have the properties of that element
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| electron | negatively charged particle found outside the nucleus
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| nucleus | small round structure in the nucleus of a cell that helps direct how proteins are put together
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| proton | positively charged particles located in the nucleus of an atom
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| neutron | particles with a neutral charfe located in the nucleus
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| energy level | the amount of energy carried by an electron in an atom
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| isotope | an atom with the same number of protons and a diffetent number of neutrons from other atoms of the same element
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| mass number | the sum of protons and neutrons in the nucleus
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| atomic number | number of protons in the nucleus of one atom of an element
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| metal | elements with a shiny surface
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| malleable | a term used to describe a material that can be pounded into shapes
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| ductile | a term used to describe a material that cane be pulled out into a long wire
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| conductivity | the ability of an object to transfer heat or electricity to another object
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| reactivity | the ease and speed with whichan element combines or reacts with other elements
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| corrosion | the gradual wearing away of a metal element due to a chemical reaction
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| alkali metal | an element in group one of periedic table
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| alkaline earth metal | an element in group two of periodic table
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| transition metal | one of the elements in group three through twleve
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| alloy | a mixture of two or more elements of which is a metal
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| nonmetal | an element that lacks most of the properties of a metal
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| diatomic molecule | a molecule consistins of two atoms
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| halogen | group of elements in the periodic highly reactive ninmetals
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| noble gas | a group of elements that generally do not react with other elements
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| metalliod | an element thathas some characteristics of both metals and nonmetals
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| semiconductor | a substance that can conduct electricity under some conditions
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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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