Unit 2 Science Voabulary

Edit Answers
1234567891011121314151617181920
Across
  1. 4. A chemical bond formed between two ions with opposite charges. A chemical bond formed between two ions with opposite charges. Atoms may share
  2. 5. bond Covalent bond between two atoms in which electrons are shared unequally
  3. 6. The transition of an element from a solid to a gas, without transitioning to a liquid first
  4. 8. A (usually irreversible) change in a substance that rearranges its atomic structure and therefore it’s chemical and physical properties
  5. 11. A chemical change that happens when two or more elements combine or rearrange to form a new element
  6. 13. The temperature at which the vapor pressure of a liquid element equals the pressure surrounding the liquid
  7. 14. Chemical atoms being held together by a strong force of attraction
  8. 15. An atom or group of atoms that has a positive or negative charge as a result of the loss or gain of an electron(s)
  9. 17. A substance composed of exactly two elements that cannot be simplified by any further means
  10. 19. A covalent bond in which two atoms share a pair of electrons
  11. 20. A hot ionized gas consisting of approximately equal numbers of positively charged ions and negatively charged electrons. Due to its properties being very different from regular gasses, it is sometimes referred to as the fourth state of matter
Down
  1. 1. The temperature at which the solid form of an element becomes a liquid.
  2. 2. A change in a substance that affects its state of matter, but not its chemical makeup
  3. 3. Two or more atoms bonded together, the smallest unit of a chemical compound that can take part in chemical bonding
  4. 7. A number assigned to an element in chemical combination that represents the number of electrons lost (or gained, if the number is negative) by an atom of that element in the compound
  5. 9. A set of chemical symbols showing the elements present in a compound and their relative proportions
  6. 10. An ion comprised of two or more atoms.
  7. 12. A chemical bond that involves the sharing of electron pairs between atoms
  8. 16. A substance that forms as a result of a chemical reaction
  9. 18. A substance that takes part in and undergoes change during a reaction.