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Atoms, Elements, Compounds, & Mixtures Test Review

Atoms, Elements, Compounds, & Mixtures Test Review. September 2012. The number of which type of particle determines the identity of an element?. Electrons Protons Photons Neutrons. The picture below represents a __. Compound Mixture of compounds Mixture of elements

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Atoms, Elements, Compounds, & Mixtures Test Review

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  1. Atoms, Elements, Compounds, & Mixtures Test Review September 2012

  2. The number of which type of particle determines the identity of an element? • Electrons • Protons • Photons • Neutrons

  3. The picture below represents a __. • Compound • Mixture of compounds • Mixture of elements • Mixture of elements & compounds

  4. Sharon pours salt into a glass of water. The salt dissolves. The substance in the glass is a(n)__. A) Elements C) Compound B) Mixture D) Atom

  5. How many electrons does Florine have? A) 9 B) 10 C) 19 D) 28

  6. The air we breathe contains different individual gases (mostly nitrogen and oxygen). Which of the following correctly describes the air we breathe? A) Elements C) Compound B) Mixture D) Liquid

  7. Which of the following is a property of a nonmetal? • It breaks apart easily • It is a good conductor of heat • It can be stretched into wires

  8. The picture below represents a(n) __. A) Element C) Compound B) Mixture D) Atom

  9. How many neutrons does Aluminum have? A) 13 B) 14 C) 27 D) 40

  10. Select the term that best completes the following statement:H2O, or water, contains one ___. • element • hydrogen atom • oxygen atom • oxygen molecule

  11. All three pictures below represent __. A) Elements C) Compounds B) Mixture s D) Atoms

  12. An element is made up of • A mixture of different types of atoms • Different types of atoms chemically bonded • Different types of cells • Only one type of atom

  13. What is the smallest particle of an element? • Mixture • Compound • Molecule • Atom

  14. The atomic mass of Sulfur is ___. A) 32 B) 48 C) 16 D) 33

  15. Scientists have discovered just over ____ different elements with unique properties. • 110 • 200 • 50 • 400

  16. The picture below represents a __. • Compound • Mixture of compounds • Mixture of elements • Mixture of elements & compounds

  17. What defines a mixture? • Cannot be broken down into a simpler substance • Described by a chemical formula • Can be physically broken into basic substances • Created through a chemical reaction

  18. + Use the above picture to fill in the blanks for the following statement.The __ carbon combines with the __ oxygen to form the __ carbon dioxide. C O2 CO2 • Compound; compound; element • Element; element; compound • Element; compound; mixture • Compound; element; mixture

  19. Which of the following definitions characterizes an element? • Contains only one type of atom • Can only be broken down by chemical means • Contains a basic combination of 2 or more substances • Can be separated through physical means

  20. The atomic number of Germanium is ___. A) 31 B) 32 C) 70 D) 73

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