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Questions and Answers
Which element is used to help patients with breathing problems?
What is sodium chloride commonly used for?
Which elements are used to make jewelry?
What element is used to make advertisements and lights?
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Which element is used to make toothpaste for oral hygiene?
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Which element is used in hospitals to help patients with breathing problems?
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What element is used in making electrical cables?
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Which element is used in pencils in the form of graphite?
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Which element is used to make advertisements and lights?
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What elements are used to make fertilizers?
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What is the atomic number and mass number of Beryllium?
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Which element has 7 protons and a mass number of 14?
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How is the chemical symbol for Aluminium written with its atomic and mass numbers?
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What is the mass number of an atom with 12 protons and 12 neutrons?
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Which of these elements has the atomic number 20?
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What is the atomic representation for Magnesium with 12 protons and 12 neutrons?
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Study Notes
Elements and Compounds in Everyday Life
- Silver and gold are used to make jewellery
- Oxygen is used in hospitals to help patients with breathing problems
- Carbon in the form of graphite is used to make pencils
- Sodium chloride (table salt) is used as a food additive
- Neon is used to make advertisements and lights
- Fluorine is used in making toothpaste for oral hygiene
- Copper is used to make electrical cables
- Iron is used to make items such as nails, roofing sheets, and farm tools
- Potassium and sodium are used to make fertilizer
Mineral Elements
- Elements found in the soil or in food are called mineral elements
- Mineral elements help plants and animals to grow and function properly
Atomic Number and Mass Number
- Atomic number refers to the number of protons in an atom of an element
- Mass number is the sum of protons and neutrons in an atom
- The atomic number is written as a subscript, and the mass number is a superscript
- Both the atomic number and mass number are written on the left side of the symbol of the element
- The number of protons in an atom is equal to the number of electrons in the atom
- The atomic number helps to represent an atom and is called an atomic representation
Examples of Elements
- Hydrogen: symbol - H, atomic number - 1, mass number - 1
- Lithium: symbol - Li, atomic number - 3, mass number - 7
- Lithium has 3 protons and 4 neutrons, therefore the mass number of lithium is 3 + 4 = 7
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Description
This quiz tests your knowledge of the uses of various elements and compounds in daily life, including silver, gold, oxygen, carbon, sodium chloride, neon, and fluorine.
