Across
- 3. a property that describes how well one substance dissolves in another substance
- 5. to change state from a solid to a gas
- 6. a push or a pull on an object
- 10. to change state from a gas to a solid
- 11. a solid structure whose atoms or molecules are arranged in a repeating, three-dimensional pattern
- 15. an individual particle of an element
- 17. a limitation on the range of possible solutions to a design
- 20. a representation of an object which makes important aspects easier to see
- 23. when referring to forces, pulling together
- 24. a full-scale, working model of a design that can be tested as part of the design process
- 27. a chemical reaction that releases more energy to the surroundings than it absorbs
- 29. a property that describes the mass of a certain volume of matter
- 31. the requirements that must be met for an engineering solution to be successful
- 32. the state of matter in which atoms or molecules are completely separated from one another by empty space and can move around independently of one another
- 34. the amount of force exerted over a certain area
- 36. a chemical reaction that absorbs more energy from the surroundings than it releases
- 38. to change state from a gas to a liquid
- 39. a substance that exists before a chemical reaction takes place and changes as a result of the reaction
- 40. to change state from a liquid to a gas at the surface of the liquid
- 41. a unique particle of matter that is a fundamental building block of matter
Down
- 1. a shorthand notation of one, two, or three letters that represent the name of the element
- 2. a new substance that forms during a chemical reaction
- 4. a measure of the average kinetic energy of the particles of a substance
- 7. an amount of something measured per unit of something else
- 8. the rate of change of an object’s velocity; can be speeding up, slowing down, or changing direction
- 9. a characteristic of matter
- 12. on a scale that people can see with their eyes
- 13. the distance and direction that an object is from a reference point
- 14. able to be broken down into smaller molecules by biological agents, such as bacteria
- 16. the path that an object in space follows around another object due to gravitational forces between the objects
- 18. the state of matter in which atoms or molecules are closely packed and touching one another in fixed positions
- 19. a group of two or more atoms that are held together by chemical bonds
- 21. a force that opposes motion between two surfaces that are touching
- 22. a unit used to measure the strength of a force
- 24. a type of extended structure that is made of many smaller, repeating subunits in a chain
- 25. matter that has a constant chemical composition and characteristics
- 26. the amount of gravitational force on an object
- 28. the state of matter in which atoms or molecules are closely packed and touching one another but are not held in fixed positions
- 30. the amount of matter in an object or sample
- 33. an object’s speed and direction of motion
- 35. the rate that describes how far an object moves over time
- 37. thermal energy transferred from a warmer object to a cooler one