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Chemistry Unit test review list
final exam vocabulary and concepts
Terms in this set (41)
the smallest part of an element
matter with only one kind of atom
two or more elements combined in a chemical reaction to make a new substance
two or more substances in the same place but not chemically bonded
a type of homogenous mixture where one substance is dissolved in another substance
the smallest part of a compound
anything that has mass and takes up space
a mixture that is the same throughout like milk or air
a mixture that is not the same throughout like soil or a salad
changing directly from a solid to a gas
the ability of metals to be drawn into a thin wire
a property of metals that allows them to change shape
the force of gravity acting on an object. Unlike mass weight will change with location.
D = M / V
unit of mass
gram or kg
unit of liquid volume
unit of solid volume
tool to measure mass
tool to measure volume of a liquid
density of water
1.00 g/mL. Objects with a density of more than 1 will sink. Objects with a density of less than 1 will float
a subatomic particle that has a positive charge and that is found in the nucleus of an atom having a mass of 1 amu
a subatomic particle that has no charge and that is found in the nucleus of an atom having a mass of 1 amu
negatively charged particle; located outside the atomic nucleus having a mass of 0 amu
matter with definite shape and volume having less energy than in the liquid or gas states
a substance in the fluid state of matter having no fixed shape but a fixed volume.
matter with no fixed (definite) shape or volume and having more energy than in a liquid or solid state
an electron that is found in the outermost shell of an atom and that determines the atom's chemical properties
law of conservation of mass
in a chemical reaction matter can not be created or destroyed, the mass of the products must equal the mass of the reactants
a chemical bond formed between metals and nonmetals where electrons are transfered
a chemical bond formed between nonmetals where electrons are shared
a charged atom
A change that occurs when one or more substances change into entirely new substances with different properties.
A change of matter from one form to another without a change in chemical properties.
family 1 on the periodic table, having 1 valence electron
An atom with the same number of protons and a different number of neutrons from other atoms of the same element.
Sum of the number of protons and neutrons in the nucleus of an atom
the amount of space an object takes up.
equal to the number of protons for any element
alkaline earth metals
name of family 2 on the periodic table having 2 valence electrons
non reactive family located in group 18 (family 8)
most reactive non-metal family having 7 valence electrons
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