Maris Stella High School Lower Sec Science Chapter 3.1 Quiz
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Questions and Answers

What is an element?

  • A pure substance that can be broken down into simpler substances by chemical methods
  • A compound formed by the combination of different elements
  • A mixture of different substances that can be separated by physical means
  • A pure substance that cannot be broken down into simpler substances by chemical methods (correct)

    • How many elements have been discovered so far?

  • 120
  • 100
  • 92
  • 118 (correct)

    • What are the symbols for elements?

  • The symbol is created by combining the first two letters of the element's name
  • The first letter is lowercase followed by an uppercase letter
  • The first letter is always a capital letter followed by a small letter (correct)
  • Always a single letter representing the element's name

    • What is the symbol for chlorine?

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

    Which element's symbol is derived from its Latin name 'cupric'?

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

    How many elements are gases at room temperature?

    <p>11</p> Signup and view all the answers

    Which element is a liquid at room temperature?

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

    Which type of elements are good electrical conductors and malleable?

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

    Where are metals found in the Periodic Table in relation to the 'staircase line'?

    <p>On the left of the line</p> Signup and view all the answers

    In the Periodic Table, where are elements with similar chemical properties found?

    <p>In groups</p> Signup and view all the answers

    What are the tiny particles that elements are made up of called?

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

    What is the element used to kill bacteria in swimming pools and drinking water?

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

    Which element is used as fuel in space shuttles?

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

    Study Notes

    Elements Overview

    • Elements are pure substances that consist of only one type of atom.
    • Currently, 118 elements have been discovered, each identified by a unique atomic number.

    Chemical Symbols

    • Each element is represented by a one or two-letter chemical symbol, often derived from its name in English or other languages.
    • Chlorine's symbol is Cl, stemming from its name.

    Latin Names and Symbols

    • The symbol for copper, derived from its Latin name 'cupric,' is Cu.

    States of Matter

    • At room temperature, 11 elements exist as gases, including oxygen and nitrogen.
    • Only one element, mercury (Hg), is a liquid at room temperature.

    Metal Properties

    • Metals are typically good electrical conductors and exhibit malleability, allowing them to be shaped without breaking.

    Periodic Table Organization

    • In the Periodic Table, metals are located to the left of the 'staircase line' that distinguishes metals from non-metals.
    • Elements with similar chemical properties are grouped together in vertical columns known as groups or families.

    Composition of Elements

    • Elements are composed of tiny particles called atoms, which are the fundamental building blocks of matter.

    Elemental Uses

    • Chlorine is commonly used to kill bacteria in swimming pools and drinking water, ensuring sanitation.
    • Liquid hydrogen serves as a fuel in space shuttles, providing the necessary energy for thrust during launch.

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    Description

    Test your knowledge on exploring diversity of matter by its chemical composition, including elements, compounds, and mixtures. This quiz covers the meaning of an element, a compound, and a mixture, as well as ways to classify elements.

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