Science Vocab Richna Krishnan

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Across
  1. 4. A different type of atom of a chemical element, atomic number is the same but masses are different.
  2. 5. These are neutral compounds,contain positively/negatively charged ions,cations,contain two types of elements.
  3. 8. When an atom loses electrons, it has a positive charge,more protons than electrons.
  4. 9. A written way to show the amount of atoms in each element in a compound/substance.
  5. 12. This shows how much of each molecule is in a compound.
  6. 13. A subatomic particle with a negative charge.
  7. 15. A horizontal row of elements on the periodic table.
  8. 19. A small area in the center of an atom, with neutrons and protons.
  9. 22. This type of bond forms when one or more electrons are exchanged/transferred from one atom to the other.
  10. 23. number A number that shows how many protons are in an atom.
  11. 26. The basic units of matter that make elements.
  12. 27. A combination of 2 or more atoms that form a unit, it can be divided and have the same properties as before.
  13. 28. An ion that is negatively charged.
  14. 29. mass An average of all the isotopes in an element.
Down
  1. 1. The type of bond that shares electron pairs between the atoms.
  2. 2. When an atom gains electrons, it has a negative charge more electrons than protons.
  3. 3. An area of electrons around the nucleus of an atom.
  4. 6. The way electrons are arranged in their shells.
  5. 7. number The amount of protons and neutrons combined.
  6. 8. A display of chemical elements arranged by various different properties.
  7. 10. This is a material/substances that are made of separate elements, different elements.
  8. 11. Specific patterns in properties of chemical elements on the periodic table of elements.
  9. 14. When two elements are held together by sharing/attracting electrons.
  10. 16. A charged particle that has less/more electrons than protons.
  11. 17. A subatomic particle with no electric charge.
  12. 18. A subatomic particle with a positive charge.
  13. 20. This is a substance that is made up of only two different elements. They cannot be simplified further.
  14. 21. elements that share different particular characteristics.
  15. 24. An ion that is positively charged.
  16. 25. A vertical column of elements on the periodic table.