Unit 8 Vocabulary

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Across
  1. 2. A measure of the amount of matter in an object, typically measured in grams in a laboratory setting.
  2. 4. a scientific unit of measurement used to count large amounts of extremely small particles, such as atoms, molecules, or compounds; 1 mole = 6.022 x 1023 particles
  3. 7. A general term used to describe the smallest representative unit of a substance.
  4. 8. The volume occupied by one mole of a gas at Standard Temperature and Pressure (STP); it is equal to 22.4 L.
  5. 9. composition the percent, by mass, of each element in a compound
  6. 11. number 6.022 x 1023, the number of particles in a mole
Down
  1. 1. A formula that shows the elements in a compound in their lowest whole-number ratio.
  2. 2. A group of two or more atoms held together by covalent chemical bonds; it is the smallest unit of a molecular compound.
  3. 3. A substance formed when two or more different elements are chemically bonded together in a fixed ratio.
  4. 5. A chemical formula that shows the actual number and type of atoms of each element in a molecule.
  5. 6. The smallest particle of an element that retains the chemical properties of that element.
  6. 10. mass the mass of 1 mole (6.022 x 1023 particles) of a substance; the masses on the Periodic Table are the molar mass of each element