Chemistry Reactivity Task 1
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Questions and Answers

Which of the following best describes an element?

  • A substance made up of compounds
  • A substance made up of molecules
  • A substance made up of only one type of atom (correct)
  • A substance made up of different types of atoms

    • What are the 'building blocks' of all matter?

  • Nucleus and electrons
  • Elements and compounds
  • Protons, neutrons, and electrons (correct)
  • Molecules and atoms

    • Which of the following is a compound?

  • Oxygen (O) (correct)
  • Sulphur (S)
  • Carbon (C)
  • Sodium (Na)

    • What is the difference between a compound and a mixture?

    <p>Compounds have a fixed composition, while mixtures can have variable compositions</p> Signup and view all the answers

    Which of the following elements is NOT included in the list of obvious ones?

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

    What is the chemical symbol for Gold?

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

    Which of the following is a metal?

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

    Question 5?

    <p>Correct option for question 5</p> Signup and view all the answers

    When carbon reacts with oxygen it usually forms what compound?

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

    When oxygen reacts with hydrogen it could form which compound?

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

    When iron reacts with oxygen it could form what compounds?

    <p>Rust or iron oxide</p> Signup and view all the answers

    According to the naming rule, when two elements join, the end is usually ____ide. For example, when Magnesium and Oxygen combine, it forms ___ ________.

    <p>Oxide, Magnesium oxide</p> Signup and view all the answers

    According to the naming rule, when three or more elements combine and one of them is oxygen, the ending is _____ate. For example, Copper + Sulphur + Oxygen forms ________.

    <p>-ate, Copper sulphate</p> Signup and view all the answers

    If two identical elements combine then the name doesn’t change. This happens with which of the following elements?

    <p>All of the above</p> Signup and view all the answers

    'Air' is classified as what in terms of matter?

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

    'Salty water' is classified as what in terms of matter?

    <p>'Salty water' is a mixture</p> Signup and view all the answers

    'Hydrochloric acid' is classified as what in terms of matter?

    <p>'Hydrochloric acid' is a compound</p> Signup and view all the answers

    'Diamond' is classified as what in terms of matter?

    <p>'Diamond' is an element</p> Signup and view all the answers

    What are the building blocks of all matter?

    <p>Protons, neutrons, and electrons</p> Signup and view all the answers

    Name two elements that are NOT included in the list of obvious ones.

    <p>Sodium (Na) and Tin (Sn)</p> Signup and view all the answers

    What compound could form when iron reacts with oxygen?

    <p>Iron oxide</p> Signup and view all the answers

    What is the chemical symbol for gold?

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

    What is the difference between a compound and a mixture?

    <p>A compound is a pure substance composed of two or more elements, while a mixture is a combination of two or more substances that are not chemically combined.</p> Signup and view all the answers

    Which of the following is a compound?

    <p>Sodium chloride (NaCl)</p> Signup and view all the answers

    When two identical elements combine, what happens to the name?

    <p>The name doesn’t change</p> Signup and view all the answers

    Predict the new name of the compound in a displacement reaction when copper displaces silver from silver nitrate (AgNO3).

    <p>Copper nitrate (Cu(NO3)2)</p> Signup and view all the answers

    What compound could form when oxygen reacts with hydrogen?

    <p>Water (H2O)</p> Signup and view all the answers

    What is the chemical symbol for mercury?

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

    What compound is usually formed when carbon reacts with oxygen?

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

    What compounds could be formed when iron reacts with oxygen?

    <p>Water, iron oxide, or carbon dioxide</p> Signup and view all the answers

    According to the naming rule, what is the ending when two elements join?

    <p>Usually -ide</p> Signup and view all the answers

    What is the compound formed when oxygen reacts with hydrogen?

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

    What is the compound formed when copper, sulphur, and oxygen combine?

    <p>Copper sulphate</p> Signup and view all the answers

    What is the classification of 'salty water' in terms of matter?

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

    What classification in terms of matter does 'diamond' fall under?

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

    What are the 'building blocks' of all matter?

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

    What are the types of charge in an Ionic Bond?

    <p>Positive and negative</p> Signup and view all the answers

    What is the process of forming alkaline compounds when alkali metals react with water called?

    <p>Alkali metals</p> Signup and view all the answers

    In the context of naming compounds, when two identical elements combine, what happens to the name?

    <p>The name remains the same</p> Signup and view all the answers

    When carbon reacts with oxygen, it usually forms which compound?

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

    What is the ending when two elements join, according to naming rule 1?

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

    'Hydrochloric acid' is classified as what in terms of matter?

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

    What compound could form when oxygen reacts with hydrogen?

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

    'Salty water' is classified as what in terms of matter?

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

    'Diamond' is classified as what in terms of matter?

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

    'Air' is classified as what in terms of matter?

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

    'Salty water' could be formed by which of the following processes?

    <p>Dissolving salt in water</p> Signup and view all the answers

    'Air' is composed mainly of which element?

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

    Which of the following correctly describes an element?

    <p>An element is made up of only one type of atom</p> Signup and view all the answers

    What is the difference between a compound and an element?

    <p>An element is a combination of different atoms, whereas a compound is made up of only one type of atom</p> Signup and view all the answers

    What is the classification of 'salty water' in terms of matter?

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

    What are the building blocks of all matter?

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

    What is the chemical symbol for Gold?

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

    'Diamond' is classified as what in terms of matter?

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

    Name two elements that are NOT included in the list of obvious ones.

    <p>Sodium and Tin</p> Signup and view all the answers

    'Hydrochloric acid' is classified as what in terms of matter?

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

    'Air' is classified as what in terms of matter?

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

    What are the types of charge in an Ionic Bond?

    <p>Positive and Negative</p> Signup and view all the answers

    Study Notes

    Elements and Compounds

    • Elements are the "building blocks" of all matter.
    • The chemical symbol for Gold is Au.
    • The chemical symbol for Mercury is Hg.

    Compounds

    • A compound is formed when two or more elements combine.
    • When carbon reacts with oxygen, it usually forms carbon dioxide (CO2).
    • When oxygen reacts with hydrogen, it could form water (H2O).
    • When iron reacts with oxygen, it could form iron oxide (Fe2O3) or iron(III) oxide (Fe2O3).
    • According to the naming rule, when two elements join, the end is usually "ide".
    • When Magnesium and Oxygen combine, it forms Magnesium oxide.
    • According to the naming rule, when three or more elements combine and one of them is oxygen, the ending is "ate".
    • Copper + Sulphur + Oxygen forms Copper sulfate.
    • When two identical elements combine, the name doesn't change.

    Matter Classification

    • "Air" is classified as a mixture in terms of matter.
    • "Salty water" is classified as a solution in terms of matter.
    • "Hydrochloric acid" is classified as a compound in terms of matter.
    • "Diamond" is classified as an element in terms of matter.

    Ionic Bond

    • The types of charge in an Ionic Bond are positive and negative.

    Reactivity

    • The process of forming alkaline compounds when alkali metals react with water is called alkalization.
    • When copper displaces silver from silver nitrate (AgNO3), the new compound formed is Copper nitrate (CuNO3).

    Naming Rules

    • When two identical elements combine, the name doesn't change.
    • When two elements join, the ending is usually "ide".
    • When three or more elements combine and one of them is oxygen, the ending is "ate".

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    Description

    Test your knowledge of reactivity in chemistry with this task. Colour the first two learning objectives and answer questions about elements and atoms.

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