Across
- 2. the subunits of an atom consisting of protons, neutrons, and electrons
- 3. the orbits/fixed space occupied by electrons outside of and around the nucleus of an atom
- 4. the number equal to the number of protons in the nucleus of an atom
- 7. capable of absorbing and releasing large amounts of heat before its temperature changes. (prevents supplement changes in body temp)
- 10. a group of the same pure molecules
- 11. the bonds formed between atoms that share valence electrons
- 13. Ability to form bonds to create or break down molecules
- 15. Ability to dissolve a smaller amount of another substance
- 16. the weighted average atomic mass of all the isotopes of an element
- 20. energy directly involved in moving matter
- 21. 2 or more atoms or molecules combine to form a larger, more complex molecule
- 22. the outermost shell whose electrons determine the chemical behavior of an atom
- 25. the positively charge subatomic particles located in the nucleus of an atom
- 27. A complete organized listing of elements
- 29. the shorthand representation of an element (usually the first 1 or 2 letters of the element)
- 31. the uncharged particles located in the nucleus of an atom
- 33. contain carbon. Important organic compounds in the body include: carbohydrates, lipids, proteins, and nucleic acids
- 34. the energy store in the bonds of chemical substances
- 36. Form when a change in electrons creates a charge and atoms (now ions) of opposing charges attract and create a bond
- 38. the ability to do work; has no mass and does not take up space
- 39. the unstable, heaviest isotopes of certain elements that release energy to become more stable
Down
- 1. Occur when a molecule is broken down into smaller molecules, atoms, or ions
- 5. when energy is actually doing work (Ex: constant movement of atoms)
- 6. formed when 2 or more atoms combine chemically
- 8. compounds lacking carbon, tend to be small, simple molecules
- 9. the negatively charged particles located outside of the nucleus of an atom (the charge of an electron is equal in strength to that of a proton despite their difference in mass)
- 12. energy of the electromagnetic spectrum that travels in waves
- 14. weak bonds formed when a hydrogen atom forms a “bridge” between an “electron hungry” atom.
- 17. the charged particle resulting from the gaining or losing of an electron from an atom
- 18. the energy resulting from the movement of charged particles
- 19. involves simultaneous synthesis and decomposition reactions
- 20. The sum of the neutrons and protons
- 23. energy that is stored or inactive
- 24. Adenosine triphosphate: the high-energy chemical whose energy is trapped in bonds. ATP’s energy may be transformed into the electrical energy of a nerve impulse or the mechanical energy of contracting muscles
- 26. building blocks of elements (the smallest unit of an element that maintains the properties of that element)
- 28. unique substances that cannot be broken down into simpler substances by ordinary chemical methods
- 30. Protective function of water
- 32. ionic compound contains cations (positively charge ions) and anions (negatively charged ions) other than hydrogen.
- 35. The process of spontaneous atomic decay
- 37. variations of an element that contain the same number of protons and electrons but vary in the number of neutrons