Group 7-halogens/compounds/reactivity of halogens

• What is another name for Group Seven elements?

  Halogens
• What type of elements are all the elements in Group Seven?

  Non-metals
• How many electrons do Group Seven elements have in their outer energy level?

  Seven electrons
• Why do atoms react according to the study material?

  To achieve a full outer energy level
• What type of bond is formed when two atoms of a Group Seven element react with each other?

  Covalent bond
• What is the formula for a fluorine molecule?

  F₂
• How is a covalent bond represented in diagrams?

  As a stick between the two atoms
• What happens to the melting and boiling points of Group Seven elements as you move down the group?

  They increase
• What is the physical state of fluorine and chlorine at room temperature?

  Both are gases
• What is the physical state of bromine at room temperature?

  Liquid
• Why is iodine a solid at room temperature?

  Both its melting point and boiling point are higher than 20°C
• What does relative molecular mass indicate?

  The size of a molecule
• What trend is observed in the relative molecular mass of Group Seven elements as you move down the group?

  It increases
• What is the significance of learning about Group Seven elements in exams?

  There will be plenty of questions on this topic
• What are the physical states of the halogens at room temperature?

  • Fluorine: Gas
  • Chlorine: Gas
  • Bromine: Liquid
  • Iodine: Solid
• What are the key characteristics of Group Seven elements regarding their bonding and physical properties?

  • Form diatomic molecules (e.g., F₂, Cl₂)
  • Have covalent bonds between atoms
  • Melting and boiling points increase down the group
  • Physical states vary: gases, liquid, solid
• What is the main topic of the video discussed in the study material?

  How group seven elements form covalent and ionic compounds
• What are group seven elements also known as?

  The halogens
• Where are group seven elements located on the periodic table?

  On the right side
• How many electrons do group seven elements have in their outer energy level?

  Seven electrons
• What is the name of the molecule formed by fluorine atoms?

  The fluorine molecule, F$_2$
• What type of bond is formed between two atoms in group seven elements?

  A covalent bond
• What is a key fact about how group seven elements react with non-metals?

  They form covalent compounds
• What compound is formed when chlorine reacts with hydrogen?

  Hydrogen chloride
• How can hydrogen chloride be represented to show the covalent bond?

  Using a stick to show the covalent bond
• What type of compound is formed between bromine and carbon?

  A covalent compound
• What happens when halogens react with metals?

  They form ionic compounds
• What is the outer electron configuration of lithium?

  One electron in its outer energy level
• How many protons does a chlorine atom have?

  Seventeen protons
• What happens to a chlorine atom when it gains an electron from a metal atom?

  It becomes a chloride ion with a -1 charge
• What is the overall charge of a chloride ion?

  • 1 charge
• What do we call an atom with an overall charge?

  An ion
• What happens to the name of a halogen when it forms an ion?

  The name ends with "ide"
• What does fluorine become when it forms an ion?

  Fluoride
• What does chlorine become when it forms an ion?

  Chloride
• What are the key facts about group seven elements forming compounds?

  • Form covalent compounds with non-metals
  • Form ionic compounds with metals
  • Have seven electrons in their outer energy level
• What are the differences between covalent and ionic compounds formed by group seven elements?

  Covalent Compounds:

  • Formed with non-metals
  • Share electrons

  
  

  Ionic Compounds:

  • Formed with metals
  • Transfer electrons
• What should you be able to describe and explain by the end of the video?

  The reactivity of the halogens and how a more reactive halogen can displace a less reactive halogen.
• What are the elements in group seven called?

  Halogens
• What happens when a halogen reacts with a metal?

  The halogen atom gains one electron to achieve a full outer energy level.