science vocab.
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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| The law stating that in a chemical reaction, matter is neither gained nor lost. | laws of conservation of mass
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| phase change: a change from one state (solid or liquid or gas) to another without a change in chemical composition. | physical change
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| chemical process: (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved | chemical change
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| A part or aspect of something, esp. one that is essential or characteristic. | element
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| a representation of a substance using symbols for its constituent elements. | chemical formula
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| A molecule that contains two atoms. | element diatomic molecule
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| a compound made of 2 or more nonmetal elements | compound molecule
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| A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction | chemical reation
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| substances that go through a chemical change | reactants ( in a chemical equation )
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| A chemical equation is symbolic representation of a chemical reaction where the reactant entities are given on the left hand side and the product entities on the right hand side. | chemical equation
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| Hold liquids and for ballpark estimates | beaker
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| magnifies microsopic objects | microscope
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| to measure the length of objects | rule
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| used to pick up and hold test tube for short periods for heating | test tube holder
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| accurate measurements of volume | graduted cylinder
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| a push or pull, has a size and direction | force
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| an object at rest stays at rest an object moving stays moving until stopped by an oppiste force | newton's 1st law
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| the rate of change of momentum is proportional to the imposed force and goes in the direction of the force | newton's 2nd law
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| the distance traveled divided by the time needed to travel that distance | speed
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| the act or an instance od directing | direction
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