Chemistry Elements Charge Quiz
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Questions and Answers

What is the charge of group 1 element?

  • 0
  • +2
  • +3
  • +1 (correct)

    • What is the charge of group 2 element?

  • +1
  • -1
  • +3
  • +2 (correct)

    • What is the charge of group 3 element?

  • +3 (correct)
  • +2
  • +1
  • -3

    • What is the charge of group 4 element?

    <p>+4/-4</p> Signup and view all the answers

    What is the charge of group 5 element?

    <p>-3</p> Signup and view all the answers

    What is the charge of group 6 element?

    <p>-2</p> Signup and view all the answers

    What is the charge of group 7 element?

    <p>-1</p> Signup and view all the answers

    What is the charge of group 8 element?

    <p>0</p> Signup and view all the answers

    What is the symbol for a zinc ion?

    <p>Zn^2+</p> Signup and view all the answers

    What is the symbol for a silver ion?

    <p>Ag+</p> Signup and view all the answers

    What is the symbol for a hydrogen ion?

    <p>H+</p> Signup and view all the answers

    What is the symbol for ammonium ion?

    <p>NH4+</p> Signup and view all the answers

    What is the symbol for a nitrate ion?

    <p>NO3-</p> Signup and view all the answers

    What is the symbol for a hydroxide ion?

    <p>OH-</p> Signup and view all the answers

    What is the symbol for a carbonate ion?

    <p>CO3^2-</p> Signup and view all the answers

    What is the symbol for a sulphate ion?

    <p>SO4^2-</p> Signup and view all the answers

    What charge must all ionic formulas add up to?

    <p>0</p> Signup and view all the answers

    What is the chemical formula for hydrochloric acid?

    <p>HCl</p> Signup and view all the answers

    What is the chemical formula for nitric acid?

    <p>HNO3</p> Signup and view all the answers

    What is the chemical formula for sulfuric acid?

    <p>H2SO4</p> Signup and view all the answers

    What is the chemical formula for phosphoric acid?

    <p>H3PO4</p> Signup and view all the answers

    What is the chemical formula for magnesium chloride?

    <p>MgCl2</p> Signup and view all the answers

    What is the chemical formula for calcium sulfide?

    <p>CaS</p> Signup and view all the answers

    What is the chemical formula for aluminium nitrate?

    <p>Al(NO3)3</p> Signup and view all the answers

    What is the chemical formula for ammonium sulfate?

    <p>(NH4)2SO4</p> Signup and view all the answers

    What is the symbol for a gas?

    <p>(g)</p> Signup and view all the answers

    What is the symbol for a solid?

    <p>(s)</p> Signup and view all the answers

    What is the symbol for a liquid?

    <p>(l)</p> Signup and view all the answers

    What is the symbol for aqueous solution?

    <p>(aq)</p> Signup and view all the answers

    Which substance gives a squeaky pop with a lit splint?

    <p>Hydrogen</p> Signup and view all the answers

    What substance relights a glowing splint?

    <p>Oxygen</p> Signup and view all the answers

    What substance turns blue cobalt chloride paper pink?

    <p>Water</p> Signup and view all the answers

    What substance turns orange bromine water colorless?

    <p>Alkenes</p> Signup and view all the answers

    What substance boils at exactly 100 degrees and freezes at 0?

    <p>Water</p> Signup and view all the answers

    How do you test for carbon dioxide?

    <p>Limewater</p> Signup and view all the answers

    What is the observation for the carbon dioxide limewater test?

    <p>Cloudy</p> Signup and view all the answers

    What are two methods for testing for water?

    <p>Cobalt chloride paper and anhydrous copper sulfate</p> Signup and view all the answers

    What is the observation for the cobalt chloride paper test?

    <p>Blue to pink</p> Signup and view all the answers

    What is the observation for the anhydrous copper sulfate test?

    <p>White to blue</p> Signup and view all the answers

    What are the products of a complete combustion of a hydrocarbon?

    <p>Carbon dioxide and water</p> Signup and view all the answers

    What are the products of incomplete combustion of a hydrocarbon (gas products)?

    <p>Carbon monoxide and water</p> Signup and view all the answers

    What are the products of incomplete combustion of a hydrocarbon (solid products)?

    <p>Carbon and water</p> Signup and view all the answers

    What is the mass of a proton?

    <p>1</p> Signup and view all the answers

    What is the mass of a neutron?

    <p>1</p> Signup and view all the answers

    What is the mass of an electron?

    <p>1/2000</p> Signup and view all the answers

    What is the charge of a proton?

    <p>+1</p> Signup and view all the answers

    What is the charge of a neutron?

    <p>0</p> Signup and view all the answers

    What is the charge of an electron?

    <p>-1</p> Signup and view all the answers

    Where is the proton located?

    <p>Nucleus</p> Signup and view all the answers

    Where is the neutron located?

    <p>Nucleus</p> Signup and view all the answers

    Where is the electron located?

    <p>Shell</p> Signup and view all the answers

    What substance turns anhydrous copper sulfate from white to blue?

    <p>Water</p> Signup and view all the answers

    What is the most abundant gas in the atmosphere?

    <p>Nitrogen</p> Signup and view all the answers

    What is the percentage of nitrogen in the air?

    <p>78%</p> Signup and view all the answers

    What is the percentage of carbon dioxide in air?

    <p>0.04%</p> Signup and view all the answers

    What is the percentage of argon in air?

    <p>0.9%</p> Signup and view all the answers

    What is the percentage of oxygen in air?

    <p>21%</p> Signup and view all the answers

    What method is used to separate gases in the air?

    <p>Fractional distillation</p> Signup and view all the answers

    Study Notes

    Basic Charges of Elements

    • Group 1 elements have a charge of +1.
    • Group 2 elements have a charge of +2.
    • Group 3 elements have a charge of +3.
    • Group 4 elements can have a charge of +4 or -4.
    • Group 5 elements have a charge of -3.
    • Group 6 elements have a charge of -2.
    • Group 7 elements have a charge of -1.
    • Group 8 elements have a neutral charge (0).

    Ion Symbols

    • Zn²⁺ represents a zinc ion.
    • Ag⁺ represents a silver ion.
    • H⁺ denotes a hydrogen ion.
    • NH₄⁺ signifies an ammonium ion.
    • NO₃⁻ indicates a nitrate ion.
    • OH⁻ denotes a hydroxide ion.
    • CO₃²⁻ indicates a carbonate ion.
    • SO₄²⁻ represents a sulfate ion.

    Ionic Charge Balance

    • The total charge in ionic formulas must equal zero.

    Chemical Formulas of Acids and Compounds

    • HCl is hydrochloric acid.
    • HNO₃ represents nitric acid.
    • H₂SO₄ is sulfuric acid.
    • H₃PO₄ signifies phosphoric acid.
    • MgCl₂ indicates magnesium chloride.
    • CaS represents calcium sulfide.
    • Al(NO₃)₃ is aluminum nitrate.
    • (NH₄)₂SO₄ signifies ammonium sulfate.

    Physical States Symbols

    • (g) indicates gas.
    • (s) denotes solid.
    • (l) represents liquid.
    • (aq) signifies aqueous solution.

    Chemical Tests and Observations

    • Hydrogen produces a squeaky pop with a lit splint.
    • Oxygen relights a glowing splint.
    • Water turns blue cobalt chloride paper pink.
    • Alkenes decolorize orange bromine water.
    • Water boils at 100°C and freezes at 0°C.
    • Carbon dioxide can be tested using limewater.
    • The limewater test yields a cloudy observation for carbon dioxide.
    • Cobalt chloride paper turns from blue to pink when it contacts water.
    • Anhydrous copper sulfate changes from white to blue when it comes into contact with water.

    Combustion Products

    • Complete combustion of hydrocarbons produces carbon dioxide and water.
    • Incomplete combustion can produce carbon monoxide and water (gas products).
    • Incomplete combustion may also yield carbon and water (solid products).

    Atomic Mass and Charge

    • A proton has a mass of approximately 1 atomic mass unit (amu).
    • A neutron also has a mass of approximately 1 amu.
    • An electron has a mass of 1/2000 amu.
    • Protons carry a charge of +1.
    • Neutrons have no charge (0).
    • Electrons carry a charge of -1.

    Atomic Structure

    • Protons and neutrons are located in the nucleus of an atom.
    • Electrons are located in shells surrounding the nucleus.

    Atmospheric Composition

    • Nitrogen is the most abundant gas in the atmosphere, comprising 78%.
    • Carbon dioxide constitutes 0.04% of the atmosphere.
    • Argon represents 0.9% of atmospheric gases.
    • Oxygen makes up 21% of the atmospheric composition.

    Separation of Gases

    • Fractional distillation is the method employed to separate gases in the air.

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    Description

    Test your knowledge with these flashcards on the charges of various groups of elements in chemistry. Each card highlights the charge associated with a specific group, helping you reinforce your understanding of chemical properties. Perfect for students looking to master chemistry concepts.

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