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unit 2 chemistry voc

HMS 7th grade Chemistry Vocabulary

QuestionAnswer
the change of appearance, shape, or phase of matter of a substance but do not change its chemical make-up; still same substance physical change
a combination of two or more substances that are not chemically combined; can easily separate the parts through physical means mixture
a substance that conducts thermal energy(heat) or electric charges well conductor
able to be drawn or pulled into a wire ductility
a neutral group of atoms held together by covalent bonds; group of 2 or more atoms chemically combined molecule
a property of matter that describes a substance based on its ability to change into a new substance with different properties chemical property
the amount of matter in a given space or volume; the mass per unit volume of a substance density
able to be pounded into thin sheets without shattering malleability
the amount of solute needed to make a saturated solution using a given amount of solvent at a certain temperature; able to dissolve solubility
creates new and different substances chemical change
a pure substance composed of two or more elements that are chemically combined compound
a mixture that appears to be a single substance but is composed of particles of two or more substances solution
a property of matter than can be observed or measured without changing the identity of the matter physical property
an arrangement of the elements according to their atomic numbers periodic table of elements
the smallest unit of an element that has all the properties of that element atom
elements that are shiny, malleable and good conductors of heat energy and an electric current metals
the number of protons in the nucleus of an atom atomic number
elements that are not shiny and are poor conductors of heat(thermal) energy and electric current nonmetals
elements that have properties of both metals and nonmetals; sometimes referred to as semiconductors metalloids
Created by: jlopez1023
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