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Wood and paper are combustible _________.
Different materials are good for different jobs based on their __________.
Heat energy is sometimes called _______ energy – it is the energy needed to make the temperature of something rise.
Thermal conductors are materials that transfer thermal energy easily.
A thermal _________ is something that prevents heat from moving from one place to another.
When a substance dissolves, it involves a solid going into a liquid phase.
A separation process is a method that converts a mixture or solution of chemical substances into two or more distinct product mixtures.
____________ changes can't be undone.
The technique used to separate substances that are insoluble in a particular solvent from those that are _______.
The technique used to separate substances that are _________ in a particular solvent from those that are soluble.
___________ is the change of a liquid to a gas.
Filtration is a method for separating an insoluble solid from a liquid.
____________ is the change from a vapor to a condensed state (solid or liquid).
A __________ change means that the original substance can be retrieved.
An __________ is a procedure carried out to support or refute a hypothesis.
A scientific _____________ is a plan for asking questions and testing possible answers.
A ________ is something that can change it's value.
