Across
- 5. All matter is composed of? page 25
- 7. Which type of mixture has tiny particles? page 29
- 14. Substances that increase the rate of chemical reaction without themselves becoming chemically changed? page 38
- 15. When bonds are broken in larger molecules, resulting in smaller, less complex molecules is which type of chemical reaction? page 36
- 16. What energy is the results form from the movement of charged particle? page 24
- 17. What is the other name for exchange reaction? page 36
- 19. Two or more atoms held together by chemical bond is called? page 28
- 21. What energy is energy in action? page 24
- 22. Both protons and neutrons have the same? page 25
- 24. What bear a positive electrical charge? page 25
- 28. What energy travels in waves? page 24
- 30. Part of calcium phosphate salt in bones and teeth. Also present in nucleic acids and part of ATP. page 26
- 33. Which element is a component of proteins and nucleic acids (genetic material)? page 26
- 35. Salt and water is an example of which type of mixture? page 29
- 36. What kind of bonds form between water molecules? page 35
- 37. We designate each element by one or two letter chemical shorthand called? page 25
- 39. Present in bone. Also an important cofactor in a number of metabolic reactions, what am i? page 26
- 40. the more modern model of atomic structure is called? page 26
- 41. When four hydrogen atoms combine with one carbon atom to form what compound? page 28
- 45. Substances composed of two or more components physically intermixed is called? page 29
- 47. What type of mixture often appear translucent or milky? page 29
- 48. Which element has the atomic symbol Ca? page 25
Down
- 1. An atom has a central ___ containing protons and neutrons tightly bound together. page 25
- 2. Which model of the atomic structure is the simplified model? page 26
- 3. The heavier isotopes of many elements are unstable and their atomic decompose spontaneously into more stable form. Isotopes that exhibit this behavior are called? page 28
- 4. What bear a negative electrical charge? page 25
- 6. A component of proteins, particularly muscle proteins what am i ? page 26
- 8. Which element has the atomic symbol O? page 25
- 9. Which element is a component of all organic molecules and influences the pH of body fluid? page 26
- 10. when two or more different kinds of atoms bind, they form molecules of a? page 28
- 11. An element necessary for conduction of nerve impulses and muscle contraction. page 26
- 12. The word atom comes from the ____ word. page 25
- 13. When smaller participles are bonded together to form larger, more complex molecules this reaction is? page 36
- 18. Which bond is form when electrons are transferred from one atom to another? page 32
- 20. Which element has 3 protons,4 neutrons and 3 electrons? page 27
- 23. An average of the relative weight of all isotopes of an element, taking into account their relative abundance in nature is? page 28
- 25. Each element is composed of more or less identical particles or building block called? page 25
- 26. What energy is stored energy? page 24
- 27. What energy is directly involved in moving matter? page 24
- 29. What have the same number of protons but differ in the number of neutrons they contain? page 27
- 31. It is important for water balance, conduction of nerve impulses and muscle contraction page 26
- 32. Which bond is form when electrons are shared? page 32
- 34. Which energy is stored in the bonds of chemical substance? page 24
- 38. Anything that occupies space and has mass. page 24
- 42. What is define as the capacity to do work or put matter into motion? page 24
- 43. it is important to understand that reach electron shell represents a different ____. page 31
- 44. When two hydrogen atoms combine with one oxygen atom to form what compound? page 28
- 46. What element is needed to make functional thyroid hormones? page 26
- 48. Which element has the atomic symbol C? page 25
- 49. What element has 26 proton and 26 electron? page 25