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Grade 6 Unit 2 Vocabulary Quizlet
Elements, Compunds, and Reactions
29
Science
6th Grade
10/18/2013

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Term
base
Definition
a drain cleaner releases hydroxide ions, so drain cleaner is
Term
indicator
Definition
a type of substance that changes color depending on whether it mixes with an acid or a base is
Term
freezing point
Definition
the temperature at which a liquid changes to a solid is its
Term
mass and volume
Definition
the physical properties used to find an objects density are
Term
weight
Definition
the force of gravity determines an objects
Term
solid
Definition
the state of matter that has a definite shape and has a definite volume is a
Term
physical changes
Definition
breaking glass and cutting fruit are examples of
Term
liquid
Definition
when enough energy is removed from nitrogen gas, the nitrogen becomes a
Term
products
Definition
the substances that form as a result of a chemical reaction are called
Term
volume
Definition
the amount of space that an object takes up is its
Term
acid
Definition
a substance that tastes sour and makes blue litmus paper turn red is a
Term
chemical equation
Definition
a way scientists represent a chemical reaction using symbols for the reactants and products in the reaction is a
Term
temperature
Definition
the measure of the average kinetic energy of the particles in a material is called
Term
law of conservation of mass
Definition
matter cannot be created or destroyed
Term
atom
Definition
small particle that makes up matter
Term
physical property
Definition
properties that can be observed without changing the identity of the substance
Term
density
Definition
a measurement of how much mass fits within a certain volume
Term
gas
Definition
state of matter that does not have a definite shape or definite volume
Term
melting pot
Definition
the temperature at which the solid melts to become a liquid
Term
boiling point
Definition
the temperature at which a liquid boils
Term
condensation point
Definition
the temperature at which a gas turns into a liquid
Term
reactivity
Definition
how easily one substances reacts with another substance
Term
chemical change
Definition
change in matter in which the substances that make up the matter change into other substnaces
Term
precipitate
Definition
a solid formed when two liquids combine
Term
chemical bond
Definition
forces that hold atoms together
Term
chemical reactions
Definition
another name for chemical reactions
Term
reactants
Definition
substances that exist before a chemical reaction begins
Term
buoyancy
Definition
describes the ability of an object to float in a fluid
Term
archimedes principle
Definition
states that buoyant force is equal to the weight of the fluid that is displaced
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