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25 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)

1. What is an element?

  • A substance made up of only one kind of atom

A substance made up of only...

2. What is a compound?

  • 2 or more different elements chemically joined/bonded together

2 or more...

3. What are the names of the 3 subatomic particles?

  • Proton
  • Neutron
  • Electron
  • P
  • N
  • E

4. What 2 particles are located in the nucleus?

  • Protons and neutrons

5. Where are the electrons found?

  • In shells/energy levels around the nucleus

6. What charge does a proton have?

  • Positive or +
  • P for proton, P for ...

7. What charge does a neutron have?

  • No charge or neutral or 0
  • Neutron ... Neut ...

8. What charge does an electron have?

  • Negative or -

9. Why are elements said to have no overall charge?

  • They have equal numbers of protons and electrons. The charges cancel out

10. What is the mass of each subatomic particle?

  • Proton = 1
  • Neutron = 1
  • Electron = 0

11. What is the atomic number?

The number of protons (bottom number)
  • The number of protons (bottom number)

12. What is the mass number?

The number of protons and neutrons added together (top number)
  • The number of protons and neutrons added together (top number)

13. What is an isotope?

  • An atom of the same element with a different number of neutrons

14. How are the electrons arranged in shells around the nucleus?

  • 1st shell holds up to 2 electrons
  • 2nd shell holds up to 8 electrons
  • 3rd shell holds up to 8 electrons
  • 4th shell holds up to 8 electrons

15. How does the electronic configuration identify where elements are found in the periodic table?

  • The group number is the same as the number of electrons in the outer shell (e.g. all Group 1 elements have 1 electron in the outer shell)
  • All Group 1 elements have ...
  • All Group 2 elements have ...

16. Elements in the same group have similar what?

  • Chemical properties. They all behave and react in a similar way

17. What are the elements in Group 0 known as?

  • The nobel gasses

18. Why are they unreactive?

  • They have a full outer shell of electrons

19. Why do elements bond together to form molecules or compounds?

  • To gain a full outer shell by transfering (ionic) or sharing (covalent) electrons

20. What type of elements form ionic compounds?

  • Metals and non-metals

21. What type of elements form covalent bonds?

  • Non-metals and non-metals

22. How can we represent chemical reactions?

  • Balanced symbol equations and word equations

23. What are the reactants?

  • What is put into a chemical reaction (the stuff you start with)

24. What are the products?

  • What is produced in a chemical reaction (the stuff you make)

25. What can we say about the mass of the reactants and products?

  • It is the same before and after the reaction (mass is conserved)