Across
- 4. describes a substance that ignites easily and burns rapidly when exposed to a flame, spark, or heat source.
- 6. variable: the factor in an experiment that is measured or observed to see how it responds to changes made to the independent variable.
- 9. variable: the factor in an experiment that is intentionally changed or manipulated by the experiment to test its effects on an outcome.
- 10. : a substance that initiates or promotes combustion in other materials, typically by providing oxygen or accepting electrons in a chemical reaction.
- 11. describes information, observations, or data expressed in numbers and measurable quantities rather than descriptions.
Down
- 1. describes a substance that has the power to cause chemical damage, wear away, or destroy materials, such as metals, living tissue, or organic matter, upon direct contact.
- 2. method: a systematic, step-by-step process used by scientists to investigate natural phenomena, acquire new knowledge, or correct and integrate previous understanding.
- 3. a precise, testable prediction about what you expect to happen in an experiment based on existing knowledge or observation.Often uses an "if...then...because..." structure to clearly connect cause and effect.
- 5. a physical or chemical agent that changes the genetic material (DNA) of an organism, increasing the frequency of mutations above the natural background level.
- 7. variable: any factor in an experiment that is kept constant and unchanged throughout the investigation.
- 8. describes information, observations, or data that are descriptive and non numerical, focusing on qualities, characterstics, or properties rather than precise measurements.