Across
- 3. is the subatomic particle that is negatively charged and located the outer shell around the nucleus
- 12. is the ring that the electrons orbit in the electron cloud
- 13. solid, liquid, gas are all this
- 14. the first synthetic fiber invented (no number needed)
- 15. material that is manufactured from a naturally occurring polymer in cellulose
- 16. resources that exist in the environment without human intervention
- 17. is the subatomic particle that is positively charged and located in the nucleus
- 18. _______________ data is measurable data using instruments
- 20. the small number after the element symbol that identifies how many of each element are present
- 21. when energy in the system increases, energy is absorbed from the surroundings
- 23. __________________ variable is the responding variable or what is being measured or counted
- 25. energy that is in motion
- 26. ___________ _________ is a natural resource made of hydrocarbons that can be chemically processed into many synthetic products
- 28. energy from the sun cause a chemical reaction and the product that is created is glucose
- 31. the number in front of the molecular formula that identifies how many of the molecule are present
- 32. __________ compounds are when atoms share their outermost electron
- 33. unit of measurement for energy
- 34. the total kinetic (motion) of energy of tiny particles that make up matter
- 35. starts with a natural resource and changes chemically to produce a material with different characteristics
Down
- 1. __________ compounds are ions of opposite charges that attract and bond together
- 2. small molecules that are a result of the crude oil breakdown in a refinery
- 4. ___________________ variable is manipulated or changed by the person doing the experiment
- 5. the transfer of energy by the movement of electromagnetic waves or subatomic particles
- 6. Transfer of thermal energy that occurs in solids, liquids, and gases when two substances of different temperatures touch
- 7. part of the experimental process that gathers data through your senses
- 8. the study of energy changes that occur in chemical systems
- 9. anything that has mass and takes up space
- 10. tool used to demonstrate law of conservation of energy that energy is neither created nor destroyed only transferred
- 11. is the subatomic particle that has no charge and is located in the nucleus
- 19. making a conclusion based on facts
- 22. heat transfer caused by the rising of hotter, less dense fluids and the falling of cooler, denser fluids
- 24. when energy in the system decreases, energy is released into the surroundings
- 27. is 2 or more elements that have joined together
- 29. has definite shape and size
- 30. energy that is stored