Across
- 1. a positively charged elementary particle that is a fundamental constituent of all atomic nuclei.
- 3. a chemical element that exhibits some properties of metals and some of nonmetals
- 5. the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.
- 6. number that is non (blank)are always significant
- 8. is the process of loosening the edible part of grain (or other crop) from the chaff to which it is attached. It is the step in grain preparation after reaping.
- 10. is a heterogeneous mixture that contains solid particles sufficiently large for sedimentation.
- 12. is one of the states of matter, it consist of atoms or molecules that are connected by intermolecular bonds.
- 13. figures are any non-zero digits or trapped zeros. They do not include leading or trailing zeros.
- 20. the impetus for which a chemical substance undergoes a chemical reaction, either by itself or with other materials, with an overall release of energy.
- 21. is a unit of measure of the rate of electron flow or current in an electrical conductor.
- 23. the chemistry of carbon compounds
- 26. is a type of bonds require at least one electron donor and one electron acceptor.
- 28. is the method in which heavier components of the mixture are separated from the lighter substances with the help of wind.
- 30. composed of electrons and a nucleus. The nucleus contains protons and neutrons.
- 31. The term itself usually refers to the magnetic dipole moment.
- 32. is a temperature scale designed so that zero degrees K is defined as absolute zero
- 35. This method is best for separating a liquid from a solution.
- 36. is a mixture in which one substance of microscopically dispersed insoluble or soluble particles is suspended throughout another substance.
- 37. is a chemical element with the symbol C and atomic number 6.
- 38. A particle found in the nucleus of an atom. It is almost identical in mass to a proton, but carries no electric charge.
- 40. a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles.
- 42. is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540×1012 Hz and that has a radiant intensity in that direction of 1/683 watt per steradian.
- 43. the quality of an object or substance with respect to light reflected by the object, usually determined visually by measurement of hue, saturation, and brightness of the reflected light; saturation or chroma.used to identify physical property
- 44. is a state of matter characterized by particles arranged such that their shape and volume are relatively stable.
- 45. is a physical property of matter, as each element and compound has a unique density associated with it.
- 48. is the ability of a chemical to burn or ignite, causing fire or combustion.
- 50. is anything that has mass and takes up space.
Down
- 2. the degree to which a chemical substance or a particular mixture of substances can damage an organism.
- 4. is the base unit of time in the International System of Units
- 7. defined as a state of matter consisting of particles that have neither a defined volume nor defined shape
- 9. The process used to separate slightly larger particles from a mixture by hand
- 10. used to separate dry mixtures wich contains substances of different sizes by passing it through a sieve
- 11. a view of reactions: single atomic/molecular collisions
- 14. a branch of chemistry that deals with the identification of compounds and mixtures
- 15. a unit of force and weight, equal to the force that produces an acceleration of 9.80665 meters per second per second
- 16. composed of different substances or the same substance in different phases, as solid ice and liquid water.
- 17. state of matter change from vapor phase to liquid phase.
- 18. is a state of a chemical reaction is a particular configuration along the reaction coordinate.
- 19. a solid, liquid, or gaseous mixture that has the same proportions of its components throughout any given sample.
- 22. a chemical link formed between atoms in molecules and molecules and ions in crystals.
- 24. are chemical compounds with one or more oxygen atoms combined with another element
- 25. this is a more common method of separating an insoluble solid from a liquid.
- 27. is a chemical reaction that occurs between a fuel and an oxidizing agent that produces energy, usually in the form of heat and light.
- 29. is a special type of homogeneous mixture composed of two or more substances.
- 33. is study of the chemical substances and processes that occur in plants, animals, and microorganisms and of the changes they undergo during development and life.
- 34. is the process by which water changes from a liquid to a gas or vapor.
- 39. is the component of a solution that is present in the greatest amount.
- 41. is defined as the substance that is dissolved in a solution.
- 46. is the ability of a solid, liquid, or gaseous chemical substance (referred to as the solute) to dissolve in solvent (usually a liquid) and form a solution
- 47. is a substance with a pH value of more than 7.Views: 13951 Update:2019-11-16
- 49. the fundamental unit of length in the metric system