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Flashcards

CHEMISTRY C1 1

Usuário eliminado O usuário eliminou as informações de disciplina Inglês 21 flashcards

Flashcards do conjunto (21)

  1. 1What are elements made of?Atoms
  2. 2How many types of atom does an element contain?One
  3. 3How many types of atom does a compound contain?Two or more
  4. 4What is the basic structure of an atom?An atom has a tiny nucleus in its centre surrounded by electrons
  5. 5What are atoms made of?Protons, neutrons and electrons
  6. 6What kind of charge does an electron have?Negative
  7. 7What kind of electric charge does a neutron have?No charge, they're neutral
  8. 8What kind of electric charge do protons have?Positive
  9. 9What is an atomic number?The number of Protons OR Electrons
  10. 10What is a mass number?The number of Protons + Neutrons
  11. 11How are atoms arranged in the periodic table?In order of their atomic number
  12. 12How are electrons arranged in an atom?In energy levels or shells
  13. 13What determines the way an element reacts?The number of electrons in its outermost shell
  14. 14Why are the atoms of Group 0 elements so unreative?They have full outer shells, making them stable
  15. 15What does the formula of a compound show?The number and types of different atoms bonded together to make that compound.
  16. 16What is formed when a metal reacts with a non metal?Ions
  17. 17What happens in ionic bonding?Metal atoms form positively charged ions and non-metals form negatively charged ions. These oppositely charged ions are attracted to each other in ionic bonding.
  18. 18What is covalent bonding?Atoms of non-metals reacting by sharing electrons.
  19. 19Can we create new atoms?No, atoms cannot be created or destroyed.
  20. 20What is a balanced equation?An equation with equal numbers of each type of atom on both sides of the arrow.
  21. 21How is the total mass of reactants related to the total mass of the product?They are always equal, atoms cannot be lost during a reaction.

Informações

Descrição
CHEMISTRY AQA
Criado por
Usuário eliminado · set 2016
Atualizado
20 nov 2016
Visualizações
40
Histórico
  • Criado por x_clairey_x · 1 abr 2014
  • Copiado por Catalina Roncal · 4 set 2016
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