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Quiz

Unit 3 - The atom and chemical substances

Elena Flores 10 perguntas

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Perguntas do quiz (10)

  1. 1What charge do protons have?
    1. APositive
    2. BNegative
  2. 2Is H2 a simple substance or an element?
    1. ASimple substance
    2. BElement
  3. 3Every chemical elements is made up by the same atoms.
    1. AVerdadeiro
    2. BFalso
  4. 4Democritus knew that atoms were divisible and were formed by subatomic particles.
    1. AVerdadeiro
    2. BFalso
  5. 5How is the net charge of the atoms?
    1. APositive
    2. BNeutral
    3. CNegative
  6. 6Symbols of the chemical elements:
    Hydrogen is [blank_start]H[blank_end] [blank_start]Carbon[blank_end] is C Copper is [blank_start]Cu[blank_end] [blank_start]Nickel[blank_end] is Ni
    [blank_start]Calcium[blank_end] is Ca Sodium is [blank_start]Na[blank_end] [blank_start]Aluminium[blank_end] is Al Gold is [blank_start]Au[blank_end]
    Iron is [blank_start]Fe[blank_end] [blank_start]Sulfur[blank_end] is S Magnesium is [blank_start]Mg[blank_end] [blank_start]Silver[blank_end] is Ag
    1. AH
    2. BCalcium
    3. CFe
    4. DCarbon
    5. ENa
    6. FSulfur
    7. GCu
    8. HAluminium
    9. IMg
    10. JNickel
    11. KAu
    12. LSilver
  7. 7Anion is an ion with more electrons than protons
    1. AVerdadeiro
    2. BFalso
  8. 8- Atomic nucleus: its formed by [blank_start]protons[blank_end] and neutrons, and it's in the [blank_start]middle of the atom[blank_end], occupying a very [blank_start]small[blank_end] space relative to the rest of the atom.
    - [blank_start]Rest of the atom[blank_end]: also called the shell. [blank_start]Electrons[blank_end] occupy the empty space around each atomic nucleus. Scientists thought electrons [blank_start]orbited[blank_end] the nucleus.
    1. Aprotons
    2. Belectrons
    3. Cmiddle of the atom
    4. Doutside of the atom
    5. Esmall
    6. Fbig
    7. GRest of the atom
    8. HOut part
    9. IHelmet
    10. JElectrons
    11. KProtons
    12. LNeutrons
    13. Morbited
    14. Nsurrounded
    15. Ojumped
  9. 9The atomic mass number is the sum of the number of neutrons and electrons
    1. AVerdadeiro
    2. BFalso
  10. 10Se+ is...
    1. AA Selenium Atom (neutral)
    2. BA Selenium Atom (negative)
    3. CA Selenium Ion (cation)
    4. DA Selenium Ion (anion)
    5. EA Selenium Ion (neutral)

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Physics and Chemistry: Unit 3 - The atoms and chemical substances.
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