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Chapter 2 Vocab

Across
A field of study focused on discovering how nature works
Involves practices including asking questions and constructing explanations
A wave of changing electrical and magnetic fields
A measure of acidity
Stored energy
Anything that has mass and takes up space
A representation or simulation of a system
Down
A testable answer to a scientific question or explanation
A well-tested and widely accepted explanation of some aspect of the natural world
When a sample of matter undergoes this type of change, there is no change in its chemical composition
A testable answer to a scientific question or explanation
The smallest unit of matter into which an element can be divided and keep its distinctive chemical properties
The capacity to do work
One of two or more forms of an element with the same atomic number but different mass numbers