Across
- 2. individual component of a larger or more complex whole
- 6. liable to change rapidly and unpredictably
- 8. multiplier for converting a quantity expressed in one set of units into an equivalent expressed in another.
- 9. without a clearly defined shape or form
Down
- 1. mass per unit volume
- 3. set of principles that try to explain something
- 4. measure of the amount of matter
- 5. a substance that takes part in and undergoes change during a reaction.
- 7. the basic units of matter and the defining structure of elements