Test Your IQ On Chemistry

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Test Your IQ On Chemistry - Quiz

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Questions and Answers
  • 1. 

    When two or more elements are combined, what is the result?

    • A.

      A Compound

    • B.

      A Blend

    • C.

      A Mixture

    • D.

      A Couple

    Correct Answer
    A. A Compound
    Explanation
    When two or more elements are combined, the result is a compound. A compound is a substance that is made up of two or more different elements chemically bonded together. The elements in a compound are present in fixed proportions and cannot be separated by physical means. This is different from a mixture, where the elements are simply mixed together and can be separated by physical means. A blend refers to a mixture of different substances, while a couple refers to two things that are paired or connected.

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  • 2. 

    Carbon monoxide is the result of a bond between one atom of carbon and how many of oxygen?

    • A.

      One

    • B.

      Ten

    • C.

      Two

    • D.

      Five

    Correct Answer
    A. One
    Explanation
    Carbon monoxide is the result of a bond between one atom of carbon and one atom of oxygen. This is because the chemical formula for carbon monoxide is CO, indicating that there is only one atom of carbon and one atom of oxygen in each molecule of carbon monoxide.

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  • 3. 

    The scientific method can include all these elements except which one?

    • A.

      Experiment

    • B.

      Assumption

    • C.

      Hypothesis

    • D.

      Prediction

    Correct Answer
    B. Assumption
    Explanation
    The scientific method involves a systematic approach to understanding the natural world through observation, experimentation, and the formulation of hypotheses and predictions. Assumptions, on the other hand, are not a formal part of the scientific method. While scientists may have certain assumptions or beliefs that guide their research, these are not considered a necessary step in the scientific process. Instead, the scientific method emphasizes the importance of gathering empirical evidence and testing hypotheses through controlled experiments.

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  • 4. 

    What starts a fire?

    • A.

      Convection

    • B.

      Germination

    • C.

      Extinction

    • D.

      Ignition

    Correct Answer
    D. Ignition
    Explanation
    Ignition is the correct answer because it refers to the process of starting a fire. It involves the initial heat and flame that ignites combustible materials, causing them to burn. Without ignition, a fire cannot start or sustain itself. Convection, germination, and extinction are unrelated to the process of starting a fire, making them incorrect options.

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  • 5. 

    What property of a fire tells you how hot it is?

    • A.

      Mass

    • B.

      Depth

    • C.

      Color

    • D.

      Width

    Correct Answer
    C. Color
    Explanation
    The color of a fire can indicate its temperature. Generally, a blue flame is hotter than a yellow or orange flame. This is because different colors of flames are caused by different substances burning at different temperatures. A blue flame indicates a higher temperature, while a yellow or orange flame indicates a lower temperature. Therefore, by observing the color of a fire, one can get an idea of how hot it is.

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  • 6. 

    Of the various forms of matter, which has mass but no shape?

    • A.

      Plasma

    • B.

      Shape

    • C.

      Gas

    • D.

      Superliquid

    Correct Answer
    C. Gas
    Explanation
    Gas is the correct answer because it is a form of matter that has mass but no definite shape. Unlike solids and liquids, gases do not have a fixed volume or shape, and they can expand to fill the container they are in. Gas particles are in constant motion and spread out to fill the available space, making them highly compressible. Examples of gases include oxygen, nitrogen, and carbon dioxide.

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  • 7. 

    Which famous 19th century chemist invented dynamite?

    • A.

      Louis Pasteur

    • B.

      Marie Curie

    • C.

      Alfred Nobel

    • D.

      Neils Bohr

    Correct Answer
    C. Alfred Nobel
    Explanation
    Alfred Nobel is the correct answer because he was a famous 19th century chemist who invented dynamite. He was a Swedish inventor and industrialist who held 355 different patents, with dynamite being one of his most notable inventions. Dynamite revolutionized the construction and mining industries, making Nobel a wealthy man. However, he became concerned about the destructive nature of his invention and established the Nobel Prizes in his will, including the Nobel Prize in Chemistry, to promote peace and scientific advancements.

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  • 8. 

    Almost 50% of the Earth's crust is composed of what element?

    • A.

      Helium

    • B.

      Vanadium

    • C.

      Potassium

    • D.

      Oxygen

    Correct Answer
    D. Oxygen
    Explanation
    Oxygen is the correct answer because it is the most abundant element in the Earth's crust, making up almost 50% of its composition. It is an essential component of minerals like silicates and oxides, which are abundant in the Earth's crust. Oxygen also combines with other elements to form various compounds, such as water and carbon dioxide, which are crucial for sustaining life on Earth.

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  • 9. 

    What is the positively charged central portion of an atom known as?

    • A.

      Nucleus

    • B.

      Neutron

    • C.

      Core

    • D.

      Electron

    Correct Answer
    A. Nucleus
    Explanation
    The positively charged central portion of an atom is known as the nucleus. It contains protons and neutrons, which are the subatomic particles that make up the majority of an atom's mass. The nucleus is surrounded by negatively charged electrons, which orbit around it in energy levels. The nucleus plays a crucial role in determining the overall properties and behavior of an atom.

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  • 10. 

    Which of these is not part of the scientific method?

    • A.

      Conclusion

    • B.

      Fabrication

    • C.

      Observation

    • D.

      Experimentation

    Correct Answer
    B. Fabrication
    Explanation
    Fabrication is not part of the scientific method because it involves creating or inventing false information or data. The scientific method is a systematic approach to acquiring knowledge through observation, experimentation, and drawing conclusions based on evidence. Fabrication goes against the principles of honesty, integrity, and objectivity that are essential in scientific research. It undermines the credibility and reliability of scientific findings, which rely on accurate and unbiased data collection and analysis.

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  • 11. 

    According to scientific law, what is neither created or destroyed but only changes in form?

    • A.

      Energy

    • B.

      Force

    • C.

      Matter

    • D.

      Mass

    Correct Answer
    A. Energy
    Explanation
    According to the law of conservation of energy, energy cannot be created or destroyed, but it can only change from one form to another. This means that the total amount of energy in a closed system remains constant. Energy can be converted from potential to kinetic, thermal to mechanical, or from one type to another, but it is always conserved. Therefore, energy fits the description provided in the question.

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  • 12. 

    Which term means requiring oxygen?

    • A.

      Systemic

    • B.

      Anaphylactic

    • C.

      Prophylactic

    • D.

      Aerobic

    Correct Answer
    D. Aerobic
    Explanation
    Aerobic means requiring oxygen. It is a term used to describe processes or organisms that need oxygen to function properly.

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