Across
- 2. also called, “chemical reaction”, is when one substance is transformed into another substance through a chemical reaction.
- 5. The act of giving up one benefit in order to gain another, greater benefit
- 8. property A characteristic of a pure substance that describes its ability to change into different substances
- 9. The amount of matter in an object
- 11. property A characteristic of a pure substance that can be observed without changing it into another substance
- 14. The energy an object has due to its motion
- 17. the energy contained within a system that is responsible for its temperature
- 19. The temperature at which a solid becomes a liquid
- 20. How compact the particles of a substance are in a space
- 22. The amount of space an object takes up
Down
- 1. A physical property that describes matter as a solid, liquid, or gas.
- 3. Collected data from observations Mat and experiments
- 4. Basic unit of matter
- 6. A material's ability to burn in the presence of oxygen
- 7. also called “thermal energy”; always flows from high to low.
- 10. Characteristic used to describe something
- 12. Anything that has mass and takes up space
- 13. The temperature at which a liquid changes to a gas
- 15. A substance made up of atoms of two or more different elements joined by chemical bonds
- 16. A pure substance made of only one kind of atom
- 18. Two or more atoms bonded together
- 21. a representation of an object or event that can be studied to understand the real object or event