Across
- 3. a branch of chemistry that studies and uses instruments and methods used to separate, identify, and quantify matter.
- 8. tells how close a measured value is to the "true" value
- 9. a physical property of matter that changes when the amount of matter in a sample changes. Examples are mass, volume, length, and charge.
- 11. has no definite shape and volume and the structure of particles are far away from each other.
- 12. a property of matter that shows no change in composition when a substance is seperated.
- 13. a process in which a conversion factor which is written in a form of ratio is used to change the units given in the data to the units desired.
- 16. a state of matter that is often thought of as a subset of gases, but the two states behave very differently.
- 17. number of protons present in the nucleus of every atom
- 20. combination of at least two atoms in a definite proportion, bound together by covalent bonds
- 22. mass of an atom
- 28. separation of a mixture by passing it in solution or suspension or as a vapor through a medium in which the components move at different rates.
- 32. energy required to remove an electron from the atom
- 33. one way of seperating a mixture used when 2 solids are going to be seperated.
- 36. tells an object how hot or cold an object is.
- 37. is concerned with the properties and behavior of inorganic compounds, which include metals, minerals, and organometallic compounds.
- 38. the quantity of matter in an object.
- 40. a branch of science that involves the study of the composition, structure and properties of matter.
- 41. ion that has a positive net charge
- 42. water molecules in the air cool and slow down and the attractions overcome their speed and join together, forming liquid water.
- 43. ion with negative net charge
- 44. process by which a substance changes from the solid phase to the liquid phase.
- 45. he transition of a substance directly from the solid to the gas state, without passing through the liquid state.
- 46. it has a characteristics of indefinite shape but has definite volume; the structure of particles are close together.
- 47. tabular display of the chemical elements
- 50. process of separating components of mixtures by using magnets to attract magnetic materials.
Down
- 1. way of seperating a mixture used when a liquid and a solid is going to be seperated.
- 2. a phase transition in which gas transforms into solid without passing through the liquid phase.
- 4. anything that has mass and takes up space
- 5. branch of chemistry concerned with the application of the techniques and theories of physics to the study of chemical systems.
- 6. a branch of chemistry that studies the structure, properties and reactions of organic compounds, which contain carbon in covalent bonding.
- 7. is the process of determining the extent of the dimensions, quantity, or extent of something.
- 10. kr;noble gas
- 14. a physical property of matter that does not change as the amount of matter change; it doesnt affect the value, amount or condition of a certain substance.
- 15. molecule that contains only two atoms
- 18. a substance made by combining two or more different materials in such a way that no chemical reaction occurs.
- 19. the study of chemical processes within and relating to living organisms.
- 21. a phase transition where a liquid turns into a solid when its temperature is lowered below its freezing point.
- 23. one of the states of matter that has a definite shape & volume and the structure of particles is very compact.
- 24. a state of matter that occurs when a group of atoms cooled to within a hair of absolute zero. When they reach that temperature the atoms are hardly moving relative to each other; they have almost no free energy to do so.
- 25. a property of matter that shows a big change in composition when a substance is seperated.
- 26. the digits in any measurement that are known with certainty, plus one digit which is uncertain.
- 27. occurs when the surface of the liquid is exposed, allowing molecules to escape and form water vapor.
- 29. expressed as N x 10^n
- 30. amount of space occupied by a substance.
- 31. molecule that consists of more than two atoms
- 34. one of the common measurements done in laboratory; involves getting mass,volume and temperature of an object.
- 35. is the ratio of the mass of an object to the volume it occupies.
- 39. refers to how the values agree closely with one another
- 48. a pure substance that is made from a single type of atom.
- 49. 2 or more different elements combined