Across
- 3. A pure substance made of only one kind of atom
- 5. mixture a mixture in which the composition is not uniform throughout
- 8. energy energy of motion
- 11. energy energy carried by sound waves
- 12. reaction the process by which one or more substances change to produce one or more different substances
- 14. Energy Potential energy that depends on the height of an object
- 16. variable The experimental factor that is manipulated; the variable whose effect is being studied. Changed on purpose.
- 19. energy A form of potential energy that is stored in chemical bonds between atoms.
- 20. variable that stays the same during an experiment
- 22. energy The total energy of motion in the particles of a substance
Down
- 1. measured using the 5 senses
- 2. A substance produced in a chemical reaction
- 3. transformation A change from one form of energy to another
- 4. energy stored energy
- 6. transfer Movement of energy from one place or object to another
- 7. A chemical substance that is present at the start of a chemical reaction
- 9. A substance made up of atoms of two or more different elements joined by chemical bonds
- 10. mixture a mixture in which the composition is uniform throughout
- 12. group In an experiment, the group that is not exposed to the treatment; contrasts with the experimental group and serves as a comparison for evaluating the effect of the treatment.
- 13. Energy the potential energy of an object that is stretched or compressed
- 15. observation made using numbers and measurements.
- 17. variable The factor that changes as a result of an experiment.
- 18. unique characteristic used to identify a pure substance.
- 21. energy Energy caused by the movement of electrons.