Across
- 3. their particles are neither too close nor to far from each other.
- 5. whether the substance undergoes combustion or not.
- 7. 1 000 000 000
- 9. can be affected by the size and amount of samples.
- 15. it floats.
- 18. elements react with each other to form a compound.
- 22. independent from the base unit they modify and always remain constant.
- 23. does not depend on the size or amount of the sample.
- 24. whether the substance can be easily decomposed or not.
- 26. process of separating a homogeneous mixture composed of two substances with different boiling points.
- 28. their particles are far apart from each other.
- 29. process of changing solid to liquid state.
- 30. 0.000000000001
- 31. symbol of Mole.
- 32. one of the common measurements done in the laboratory.
- 38. 0.000000001
- 41. matter are those that can be measured and observed without changing the composition of the substance.
- 43. tells how hot or cold an object is.
- 44. composed of two or more substance combined physically in variable proportions.
- 45. processes of separating heterogeneous mixture.
- 46. is a matter that has a definite composition and distinct properties.
- 47. a certain quantitative value is relatively close to the true value.
- 48. a solution is composed of a solute or the dissolving substance, and a solvent or the dissolving medium.
- 49. 1 000
Down
- 1. ability of a substance to react with other substance.
- 2. whether it reacts with acids, bases, and oxygen, gas, or not.
- 4. is the simplest form of matter since it is composed of only one kind of atom.
- 6. process of changing solid to gas without passing through liquid state.
- 8. whether the material is more active or less active than other members of it's chemical family.
- 9. process of converting liquid to gas.
- 10. is anything that has mass and occupies space.
- 11. the digits in any measurement that are known with certainty with an additional one digit which is uncertain.
- 12. occurs when a substance is converted to a new substance.
- 13. the amount of space occupied by a substance.
- 14. the quantity of the matter in the object.
- 16. their particles are very close to each other.
- 17. unit of cd.
- 19. the consistency of a result.
- 20. is a process of separating the components of a suspension.
- 21. it sinks.
- 25. whether the substance can damage an organism or not.
- 27. whether it will break into charged particles when in solution with water or not.
- 33. the process of simplifying a very large number or very small and it used to express multidigit numbers involving many zeros.
- 34. another method of separating mixture.
- 35. other uncertainties may come from a flaw in the equipment used or the design of an experiment.
- 36. result from the effects of uncontrolled variables.
- 37. process of separating elemental metals from other particles in a mixture.
- 39. the matter stays the se even after the change only shape, size, and state are altered.
- 40. a mixture can be either a suspension or colloid.
- 42. the ratio of the mass of an object to the volume it occupies.