Biology Vocabulary

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Across
  1. 2. the binding of two or more cells
  2. 4. - molecules a molecule which one end is more positive than the other end (which is negative)
  3. 5. - is a neutral particle that is inside the nucleus
  4. 6. - an atom, or group of atoms, bearing an electrical charge
  5. 8. a substance that consists of two or more elements
  6. 9. covalent bond- it occurs when two atoms of electronegativity share two electrons
  7. 10. - a pure substance
  8. 11. - is a negatively charged particle that orbits the nucleus
  9. 12. - Bond a chemical bond where there is a transfer of electrons
Down
  1. 1. water molecules that is an attraction between the molecules.
  2. 2. - a particle of matter that defines chemical elements
  3. 3. polar convalent bonds- a type of chemical bond that is formed when electrons are shared equally between two atoms.
  4. 7. - bond involves sharing electrons between atoms
  5. 9. - is a positively charged particle that is located in the nucleus
  6. 13. - Atoms with the same number of protons but different numbers of neutron