Science Vocabulary
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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| reactive group of elements with 2 valence electrons (group 2 of PT) | alkaline earth metals
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| law stating that an atom cannot be created or destroyed | law of conservation of matter
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| small numbers on chemical formula indicating the number of atoms in an element/compound | subscript
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| substances that are created as the result of a chemical reaction | products
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| change in substances creating a new compound | chemical change
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| positively charged particle found in the nucleus of an atom | proton
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| atomic model representing all electrons and energy levels | bohr model
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| smallest particle of matter | atom
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| forms the same element with different numbers of neutrons | isotope
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| electrons on the outer shell of an atom that participates in bonding | valence electron
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| a way of representing atoms/molecules by showing valence electrons as dots | lewis dot structure
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| chemical bonds created when electrons are shared (nonmetal + nonmetal) | covalent bond
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| atom or molecule with a net charge due to loss or gain of electron | ion
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| neutrally charged particle found inside the nucleus of an atom | neutron
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| big numbers in front of a compound indicating the number of molecules | coefficient
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| chemical bonds created when electrons are transferred (metal + nonmetal) | ionic bond
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| negatively charged particle found around the nucleus of an atom | electron
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| substances that take part in a change during a chemical reaction | reactant
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| change that does not involve a change in substances' chemical composition | physical change
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| drawing a conclusion based on data and observation | inference
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| the base unit of measurement for length in the metric system | meter
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| variables that are kept the same (controlled variables) | constant variables
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| describing something based upon your five senses | observation
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| universal method of measurement | metric system
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| the base unit of measurement for mass in the metric system | gram
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| variables that are intentionally changed to see the effect | independent variable
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| variable being measured | dependent variable
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| observable data that is not measured | qualitative data
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| data which can be measured | quantitative data
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| the base unit of measurement for volume in the metric system | liter
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| possible explanation or answer to a question; "educated guess" | hypothesis
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| horizontal rows in the periodic table where elements in each row have the same number of atomic orbitals | period
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| very reactive group of elements with 7 valence electrons | halogen
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| shiny, dense, ductile elements found on the left side of the PT | metals
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| substance made of one type of atom; this is the basic substance that cannot be broken into simpler substances | element
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| elements that are dull, non-conductors of electricity or heat; found on the right side of the PT | non-metals
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| vertical columns in the periodic table where elements in each column have the same number of valence electrons | group/family
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| two or more atoms/molecules physically together, not bonded | mixture
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| two or more atoms chemically bonded | compound
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| unreactive group of elements with a full set of valence electons (group 18 of PT) | noble gases
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| Russian chemist who formulated the periodic table based on the periodic law | Dmitri Mendeleev
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| anything that has mass and volume | matter
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| elements that have properties of both metals and non-metals | metalloids
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| very reactive group of elements with 1 valence electron (group 1 on PT) | alkali metals
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| reactive group of elements with 2 valence electrons (group 2 of PT) | alkaline earth metals
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| length and direction of a straight line between starting and ending points (vector) | displacement
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| how fast an object travels (distance/time) | speed
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| quantity represented by magnitude alone | scalar quantity
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| a change in position relative to a reference point | motion
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| speed and direction of an object in motion | velocity
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| a stationaty point or something to describe position or motion | refernce point
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| rate of change in velocity | acceleration
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| quantity represented with an arrow with both direction and magnitude | vector quantity
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| total path between two points (scalar) measured in meters (vector) | distance
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| an objects distance in a certain direction from a reference point | position
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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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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:
lily yoss
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