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M8.2: Matter

Across
An appearance that has recognizable dimensions and outlines
To move back and forth rapidly
To heat a liquid to the temperature at which it vaporizes, or turns into a gas
Of or relating to parts of an atom
Temperature at which a liquid boils
To change from a liquid to a solid by removing heat from the liquid
A subatomic particle that has a positive charge of electricity
Unmixed substances made of atoms of at least two different elements combined in definite proportions but having properties that may be different than the elements they contain
The force of attraction that holds a body together
Down
In physics, matter that has a definite shape and takes up a definite volume
Process or condition of sticking fast or adhering
Smallest particle of an element that retains the characteristics of that element
The degree of hotness or coldness of a body or environment
Subatomic particle commonly found as one of a group surrounding the nucleus of an atom; it has a negative charge of electricity and almost no mass
Any substance composed of atoms that all have the same number of protons in their nuclei