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An atom. An element. A compound. A mixture .

1. Soil is made up of pieces of rocks, wood, decayed plants, and many other materials. Soil is an example of . An atom. An element. A compound. A mixture . 2. The chemical formula for glucose is C 6 H 12 O 6 . How many different elements make up one molecule of glucose?. 1 3 12 24.

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An atom. An element. A compound. A mixture .

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  1. 1. Soil is made up of pieces of rocks, wood, decayed plants, and many other materials. Soil is an example of An atom. An element. A compound. A mixture.

  2. 2. The chemical formula for glucose is C6H12O6. How many different elements make up one molecule of glucose? • 1 • 3 • 12 • 24

  3. 3. A group of identical atoms would be classified as • A solution. • A compound. • An element. • A mixture

  4. 4. In order to react with other elements, Group 1 metals usually • Accept one electron. • Give up one electron. • Give up one proton. • Accept one proton.

  5. 5. What property of a space probe will change if a probe from Earth lands on Jupiter? • Mass • Color • Luster • Weight

  6. 6. How do compounds differ from elements? • Compounds contain only one kind of atom and elements contain more than one kind of atom. • Elements contain only one kind of atom and compounds contain more than one kind of atom. • Compounds form only ionic bonds. • Compounds form only covalent bonds.

  7. 7. Which statement is MOST accurate? • A pure substance contains just one kind of matter. • A pure substance has the same composition throughout. • A pure substance can be broken down by physical means. • A pure substance is less stable than a compound.

  8. 8. A student is investigating a sample of an element. The student observes that the element is solid, shiny, and can be bent into a new shape. The student is most likely observing • Carbon. • Oxygen. • Hydrogen. • Aluminum.

  9. 9. Which of the following is a chemical symbol representing an element? • C • CO • CO2 • H2O

  10. 10. Radium is an element found in Group 2 and Period 7. In a normal radium atom, how many electron energy levels are present? • 2 • 6 • 7 • 8

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