Questions and Answers
What is the charge of group 1 element?
What is the charge of group 2 element?
What is the charge of group 3 element?
What is the charge of group 4 element?
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What is the charge of group 5 element?
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What is the charge of group 6 element?
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What is the charge of group 7 element?
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What is the charge of group 8 element?
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What is the symbol for a zinc ion?
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What is the symbol for a silver ion?
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What is the symbol for a hydrogen ion?
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What is the symbol for ammonium ion?
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What is the symbol for a nitrate ion?
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What is the symbol for a hydroxide ion?
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What is the symbol for a carbonate ion?
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What is the symbol for a sulphate ion?
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What charge must all ionic formulas add up to?
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What is the chemical formula for hydrochloric acid?
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What is the chemical formula for nitric acid?
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What is the chemical formula for sulfuric acid?
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What is the chemical formula for phosphoric acid?
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What is the chemical formula for magnesium chloride?
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What is the chemical formula for calcium sulfide?
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What is the chemical formula for aluminium nitrate?
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What is the chemical formula for ammonium sulfate?
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What is the symbol for a gas?
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What is the symbol for a solid?
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What is the symbol for a liquid?
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What is the symbol for aqueous solution?
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Which substance gives a squeaky pop with a lit splint?
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What substance relights a glowing splint?
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What substance turns blue cobalt chloride paper pink?
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What substance turns orange bromine water colorless?
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What substance boils at exactly 100 degrees and freezes at 0?
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How do you test for carbon dioxide?
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What is the observation for the carbon dioxide limewater test?
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What are two methods for testing for water?
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What is the observation for the cobalt chloride paper test?
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What is the observation for the anhydrous copper sulfate test?
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What are the products of a complete combustion of a hydrocarbon?
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What are the products of incomplete combustion of a hydrocarbon (gas products)?
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What are the products of incomplete combustion of a hydrocarbon (solid products)?
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What is the mass of a proton?
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What is the mass of a neutron?
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What is the mass of an electron?
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What is the charge of a proton?
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What is the charge of a neutron?
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What is the charge of an electron?
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Where is the proton located?
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Where is the neutron located?
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Where is the electron located?
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What substance turns anhydrous copper sulfate from white to blue?
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What is the most abundant gas in the atmosphere?
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What is the percentage of nitrogen in the air?
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What is the percentage of carbon dioxide in air?
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What is the percentage of argon in air?
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What is the percentage of oxygen in air?
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What method is used to separate gases in the air?
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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.
Studying That Suits You
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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.
