General Science Crossword

123456789101112131415161718192021222324252627282930
Across
  1. 5. the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus.
  2. 6. atoms with the same number of protons but different numbers of neutrons and columns according to increasing atomic number.
  3. 9. force that holds atoms together in a metallic substance.
  4. 11. form between two or more atoms by the transfer of one or more electrons between atoms.
  5. 12. a negatively charged subatomic particle that can be either bound to an atom or free.
  6. 13. a chemical element that forms a salt when it reacts with metal.
  7. 15. a collection of particles called protons, which are positively charged, and neutrons, which are electrically neutral.
  8. 17. a lasting attraction between atoms or ions that enables the formation of molecules and crystals.
  9. 19. quantity that designates how fast and in what direction a point is moving.
  10. 20. of an object is the force acting on the object due to gravity.
  11. 22. a particle that consists of a nucleus of protons and neutrons surrounded by a cloud of electron.s
  12. 23. a measatom or group of atoms carrying a negative electric charge.urement of mass in motion.
  13. 26. the quantity of matter contained in an atom of an element.
  14. 27. formed by equal sharing of electrons from both the participating atoms.
  15. 28. stable subatomic particle that has a positive charge equal in magnitude to a unit of electron charge and a rest mass of 1.67262 × 10−27 kg
  16. 29. atom or group of atoms that bears a positive electric charge.
Down
  1. 1. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
  2. 2. organizes all discovered chemical elements in rows
  3. 3. the push or pull on an object with mass causes it to change its velocity.
  4. 4. any process where the velocity changes.
  5. 7. half the distance between the nuclei of identical neighbouring atoms in the solid form of an element.
  6. 8. a measure of an atom's ability to attract shared electrons to itself.
  7. 10. a covalent bond in which the atoms have an unequal attraction for electrons, and so the sharing is unequal.
  8. 14. neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen.
  9. 16. a substance that can't be broken down by non-nuclear reactions
  10. 18. the distance between the nucleus of an ion and the outermost shell of the ion.
  11. 21. the electrons in the outermost shell, or energy level, of an atom
  12. 24. a dimensionless quantity representing the amount of matter in a particle or object.
  13. 25. the smallest particle of a substance that has all of the physical and chemical properties of that substance.
  14. 30. atom or group of atoms carrying a negative electric charge.